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https://github.com/OpenTTD/OpenTTD.git
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(svn r16307) -Fix: makedepend can't handle the amount of files we have and it also miss some dependencies. That's why we introduce our custom implementation of makedepend.
This commit is contained in:
glx
941
src/depend/depend.cpp
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941
src/depend/depend.cpp
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@@ -0,0 +1,941 @@
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/* $Id$ */
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/**
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* @file depend/depend.cpp Custom implementation of Makedepend.
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*
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* We previously used makedepend, but that could not handle the amount of
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* files we have and does not handle conditional includes in a sane manner.
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* This caused many link problems because not enough files were recompiled.
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* This has lead to the development of our own dependency generator. It is
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* meant to be a substitute to the (relatively slow) dependency generation
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* via gcc. It thus helps speeding up compilation. It will also ignore
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* system headers making it less error prone when system headers are moved
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* or renamed.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#include <limits.h>
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#include <unistd.h>
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#include <map>
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#include <set>
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#include <stack>
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/** Simple string comparator using strcmp as implementation */
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struct StringCompare {
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/**
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* Compare a to b using strcmp.
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* @param a string to compare.
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* @param b string to compare.
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* @return whether a is less than b.
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*/
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bool operator () (const char *a, const char *b) const
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{
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return strcmp(a, b) < 0;
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}
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};
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/** Set of C-style strings. */
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typedef std::set<const char*, StringCompare> StringSet;
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/** Mapping of C-style string to a set of C-style strings. */
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typedef std::map<const char*, StringSet*, StringCompare> StringMap;
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/** Pair of C-style string and a set of C-style strings. */
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typedef std::pair<const char*, StringSet*> StringMapItem;
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/** Include directory to search in. */
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static StringSet _include_dirs;
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/** Files that have been parsed/handled with their dependencies. */
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static StringMap _files;
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/** Dependencies of headers. */
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static StringMap _headers;
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/** The current 'active' defines. */
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static StringSet _defines;
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/**
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* Helper class to read a file.
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*/
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class File {
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public:
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/**
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* Create the helper by opening the given file.
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* @param filename the file to open
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* @post the file is open; otherwise the application is killed.
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*/
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File(const char *filename) : filename(filename)
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{
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this->fp = fopen(filename, "r");
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if (this->fp == NULL) {
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fprintf(stdout, "Could not open %s for reading\n", filename);
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exit(1);
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}
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this->dirname = strdup(filename);
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char *last = strrchr(this->dirname, '/');
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if (last != NULL) {
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*last = '\0';
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} else {
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*this->dirname = '\0';
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}
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}
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/** Free everything we have allocated. */
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~File()
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{
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fclose(this->fp);
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free(this->dirname);
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}
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/**
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* Get a single character from the file.
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* If we are reading beyond the end of the file '\0' is returned.
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* @return the read character.
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*/
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char GetChar() const
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{
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char c = fgetc(this->fp);
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return (c == EOF) ? '\0' : c;
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}
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/**
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* Get the directory name of the file.
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* @return the directory name.
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*/
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const char *GetDirname() const
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{
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return this->dirname;
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}
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private:
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FILE *fp; ///< The currently opened file.
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char *dirname; ///< The directory of the file.
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const char *filename; ///< The name of the file.
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};
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/** A token returned by the tokenizer. */
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enum Token {
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TOKEN_UNKNOWN, ///< Unknown token
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TOKEN_END, ///< End of document
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TOKEN_EOL, ///< End of line
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TOKEN_SHARP, ///< # character, usually telling something important comes.
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TOKEN_LOCAL, ///< Read a local include
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TOKEN_GLOBAL, ///< Read a global include
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TOKEN_IDENTIFIER, ///< Identifier within the data.
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TOKEN_DEFINE, ///< (#)define in code
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TOKEN_IF, ///< (#)if in code
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TOKEN_IFDEF, ///< (#)ifdef in code
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TOKEN_IFNDEF, ///< (#)ifndef in code
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TOKEN_ELIF, ///< (#)elif in code
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TOKEN_ELSE, ///< (#)else in code
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TOKEN_ENDIF, ///< (#)endif in code
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TOKEN_UNDEF, ///< (#)undef in code
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TOKEN_OR, ///< '||' within #if expression
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TOKEN_AND, ///< '&&' within #if expression
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TOKEN_DEFINED, ///< 'defined' within #if expression
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TOKEN_OPEN, ///< '(' within #if expression
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TOKEN_CLOSE, ///< ')' within #if expression
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TOKEN_NOT, ///< '!' within #if expression
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TOKEN_ZERO, ///< '0' within #if expression
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TOKEN_INCLUDE, ///< (#)include in code
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};
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/** Mapping from a C-style keyword representation to a Token. */
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typedef std::map<const char*, Token, StringCompare> KeywordList;
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/**
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* Lexer of a file.
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*/
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class Lexer {
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public:
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/**
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* Create the lexer and fill the keywords table.
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* @param file the file to read from.
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*/
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Lexer(const File *file) : file(file), current_char('\0'), string(NULL), token(TOKEN_UNKNOWN)
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{
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this->keywords["define"] = TOKEN_DEFINE;
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this->keywords["defined"] = TOKEN_DEFINED;
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this->keywords["if"] = TOKEN_IF;
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this->keywords["ifdef"] = TOKEN_IFDEF;
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this->keywords["ifndef"] = TOKEN_IFNDEF;
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this->keywords["include"] = TOKEN_INCLUDE;
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this->keywords["elif"] = TOKEN_ELIF;
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this->keywords["else"] = TOKEN_ELSE;
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this->keywords["endif"] = TOKEN_ENDIF;
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this->keywords["undef"] = TOKEN_UNDEF;
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/* Initialise currently read character. */
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this->Next();
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/* Allocate the buffer. */
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this->buf_len = 32;
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this->buf = (char*)malloc(sizeof(*this->buf) * this->buf_len);
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}
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/** Free everything */
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~Lexer()
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{
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free(this->buf);
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}
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/**
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* Read the next character into 'current_char'.
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*/
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void Next()
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{
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this->current_char = this->file->GetChar();
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}
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/**
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* Get the current token.
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* @return the token.
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*/
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Token GetToken() const
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{
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return this->token;
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}
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/**
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* Read the currenty processed string.
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* @return the string, can be NULL.
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*/
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const char *GetString() const
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{
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return this->string;
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}
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/**
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* Perform the lexing/tokenizing of the file till we can return something
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* that must be parsed.
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*/
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void Lex()
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{
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for (;;) {
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free(this->string);
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this->string = NULL;
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this->token = TOKEN_UNKNOWN;
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switch (this->current_char) {
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/* '\0' means End-Of-File */
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case '\0': this->token = TOKEN_END; return;
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/* Skip some chars, as they don't do anything */
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case '\t': this->Next(); break;
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case '\r': this->Next(); break;
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case ' ': this->Next(); break;
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case '\\':
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this->Next();
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if (this->current_char == '\n') this->Next();
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break;
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case '\n':
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this->token = TOKEN_EOL;
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this->Next();
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return;
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case '#':
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this->token = TOKEN_SHARP;
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this->Next();
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return;
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case '"':
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this->ReadString('"', TOKEN_LOCAL);
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this->Next();
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return;
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case '<':
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this->ReadString('>', TOKEN_GLOBAL);
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this->Next();
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return;
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case '&':
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this->Next();
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if (this->current_char == '&') {
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this->Next();
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this->token = TOKEN_AND;
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return;
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}
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break;
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case '|':
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this->Next();
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if (this->current_char == '|') {
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this->Next();
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this->token = TOKEN_OR;
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return;
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}
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break;
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case '(':
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this->Next();
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this->token = TOKEN_OPEN;
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return;
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case ')':
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this->Next();
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this->token = TOKEN_CLOSE;
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return;
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case '!':
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this->Next();
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if (this->current_char != '=') {
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this->token = TOKEN_NOT;
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return;
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}
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break;
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/* Possible begin of comment */
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case '/':
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this->Next();
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switch (this->current_char) {
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case '*': {
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this->Next();
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char previous_char = '\0';
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while ((this->current_char != '/' || previous_char != '*') && this->current_char != '\0') {
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previous_char = this->current_char;
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this->Next();
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}
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this->Next();
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break;
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}
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case '/': while (this->current_char != '\n' && this->current_char != '\0') this->Next(); break;
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default: break;
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}
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break;
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default:
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if (isalpha(this->current_char) || this->current_char == '_') {
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/* If the name starts with a letter, it is an identifier */
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this->ReadIdentifier();
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return;
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}
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if (isdigit(this->current_char)) {
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bool zero = this->current_char == '0';
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this->Next();
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if (this->current_char == 'x' || this->current_char == 'X') Next();
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while (isdigit(this->current_char) || this->current_char == '.' || (this->current_char >= 'a' && this->current_char <= 'f') || (this->current_char >= 'A' && this->current_char <= 'F')) {
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zero &= this->current_char == '0';
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this->Next();
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}
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if (zero) this->token = TOKEN_ZERO;
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return;
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}
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this->Next();
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break;
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}
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}
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}
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private:
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/**
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* The token based on keyword with a given name.
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* @param name the actual keyword.
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* @return the token of the keyword.
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*/
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Token FindKeyword(const char *name) const
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{
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KeywordList::const_iterator it = this->keywords.find(name);
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if (it == this->keywords.end()) return TOKEN_IDENTIFIER;
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return (*it).second;
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}
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/**
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* Read an identifier.
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*/
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void ReadIdentifier()
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{
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size_t count = 0;
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/* Read the rest of the identifier */
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do {
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this->buf[count++] = this->current_char;
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this->Next();
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if (count >= buf_len) {
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/* Scale the buffer if required */
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this->buf_len *= 2;
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this->buf = (char *)realloc(this->buf, sizeof(*this->buf) * this->buf_len);
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}
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} while ((isalpha(this->current_char) || this->current_char == '_' || isdigit(this->current_char)));
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this->buf[count] = '\0';
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free(this->string);
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this->string = strdup(this->buf);
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this->token = FindKeyword(this->string);
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}
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/**
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* Read a string up to a given character, then set the given token.
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* @param end the 'marker' for the end of the string.
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* @param token the token to set after returning.
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*/
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void ReadString(char end, Token token)
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{
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size_t count = 0;
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this->Next();
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while (this->current_char != end && this->current_char != ')' && this->current_char != '\n' && this->current_char != '\0') {
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this->buf[count++] = this->current_char;
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this->Next();
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if (count >= this->buf_len) {
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/* Scale the buffer if required */
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this->buf_len *= 2;
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this->buf = (char *)realloc(this->buf, sizeof(*this->buf) * this->buf_len);
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}
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}
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this->buf[count] = '\0';
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free(this->string);
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this->string = strdup(this->buf);
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this->token = token;
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}
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const File *file; ///< The file to read from.
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char current_char; ///< The current character to process.
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char *string; ///< Currently processed string.
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Token token; ///< The current token to process.
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char *buf; ///< Temporary buffer.
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size_t buf_len; ///< Length of the temporary buffer.
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KeywordList keywords; ///< All keywords we know of.
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};
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/**
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* Generate a path from a directory name and a relative filename.
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* If the file is not local the include directory names will be used instead
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* of the passed parameter with directory name. If the file is local both will
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* be queried where the parameter takes precedence.
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* @param dirname the directory to look in.
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* @param filename the file to look for.
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* @param local whether to look locally (in dirname) for the file.
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* @return the absolute path, or NULL if the file doesn't exist.
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*/
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const char *GeneratePath(const char *dirname, const char *filename, bool local)
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{
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if (local) {
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if (access(filename, R_OK) == 0) return strdup(filename);
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char path[PATH_MAX];
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strcpy(path, dirname);
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const char *p = filename;
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/* Remove '..' from the begin of the filename. */
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while (*p == '.') {
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if (*(++p) == '.') {
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*(strrchr(path, '/')) = '\0';
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p += 2;
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}
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}
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strcat(path, "/");
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strcat(path, p);
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if (access(path, R_OK) == 0) return strdup(path);
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}
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for (StringSet::iterator it = _include_dirs.begin(); it != _include_dirs.end(); it++) {
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char path[PATH_MAX];
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strcpy(path, *it);
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const char *p = filename;
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/* Remove '..' from the begin of the filename. */
|
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while (*p == '.') {
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if (*(++p) == '.') {
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*(strrchr(path, '/')) = '\0';
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||||
p += 2;
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||||
}
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}
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strcat(path, "/");
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||||
strcat(path, p);
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||||
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||||
if (access(path, R_OK) == 0) return strdup(path);
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||||
}
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||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/**
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* Try to parse a 'defined(expr)' expression.
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* @param lexer the lexer to get tokens from.
|
||||
* @param defines the set of known defines.
|
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* @param verbose whether to give verbose debugging information.
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||||
* @return the value of the expression.
|
||||
*/
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bool ExpressionDefined(Lexer *lexer, StringSet *defines, bool verbose);
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||||
|
||||
/**
|
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* Try to parse a 'expr || expr' expression.
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* @param lexer the lexer to get tokens from.
|
||||
* @param defines the set of known defines.
|
||||
* @param verbose whether to give verbose debugging information.
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* @return the value of the expression.
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*/
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bool ExpressionOr(Lexer *lexer, StringSet *defines, bool verbose);
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/**
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* Try to parse a '!expr' expression. Also parses the '(expr)', '0' and
|
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* identifiers. Finally it also consumes any unknown tokens.
|
||||
* @param lexer the lexer to get tokens from.
|
||||
* @param defines the set of known defines.
|
||||
* @param verbose whether to give verbose debugging information.
|
||||
* @return the value of the expression.
|
||||
*/
|
||||
bool ExpressionNot(Lexer *lexer, StringSet *defines, bool verbose)
|
||||
{
|
||||
if (lexer->GetToken() == TOKEN_NOT) {
|
||||
if (verbose) fprintf(stderr, "!");
|
||||
lexer->Lex();
|
||||
bool value = !ExpressionDefined(lexer, defines, verbose);
|
||||
if (verbose) fprintf(stderr, "[%d]", value);
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||||
return value;
|
||||
}
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||||
|
||||
if (lexer->GetToken() == TOKEN_OPEN) {
|
||||
if (verbose) fprintf(stderr, "(");
|
||||
lexer->Lex();
|
||||
bool value = ExpressionOr(lexer, defines, verbose);
|
||||
if (verbose) fprintf(stderr, ")[%d]", value);
|
||||
lexer->Lex();
|
||||
return value;
|
||||
}
|
||||
|
||||
if (lexer->GetToken() == TOKEN_ZERO) {
|
||||
if (verbose) fprintf(stderr, "0");
|
||||
lexer->Lex();
|
||||
if (verbose) fprintf(stderr, "[0]");
|
||||
return false;
|
||||
}
|
||||
|
||||
bool first = true;
|
||||
while (lexer->GetToken() == TOKEN_UNKNOWN || lexer->GetToken() == TOKEN_IDENTIFIER) {
|
||||
if (verbose && first) fprintf(stderr, "<assumed true>");
|
||||
first = false;
|
||||
lexer->Lex();
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
/**
|
||||
* Try to parse a 'defined(expr)' expression.
|
||||
* @param lexer the lexer to get tokens from.
|
||||
* @param defines the set of known defines.
|
||||
* @param verbose whether to give verbose debugging information.
|
||||
* @return the value of the expression.
|
||||
*/
|
||||
bool ExpressionDefined(Lexer *lexer, StringSet *defines, bool verbose)
|
||||
{
|
||||
bool value = ExpressionNot(lexer, defines, verbose);
|
||||
|
||||
if (lexer->GetToken() != TOKEN_DEFINED) return value;
|
||||
lexer->Lex();
|
||||
if (verbose) fprintf(stderr, "defined");
|
||||
bool open = (lexer->GetToken() == TOKEN_OPEN);
|
||||
if (open) lexer->Lex();
|
||||
if (verbose) fprintf(stderr, open ? "(" : " ");
|
||||
if (lexer->GetToken() == TOKEN_IDENTIFIER) {
|
||||
if (verbose) fprintf(stderr, "%s", lexer->GetString());
|
||||
value = defines->find(lexer->GetString()) != defines->end();
|
||||
}
|
||||
if (open) {
|
||||
if (verbose) fprintf(stderr, ")");
|
||||
lexer->Lex();
|
||||
}
|
||||
lexer->Lex();
|
||||
if (verbose) fprintf(stderr, "[%d]", value);
|
||||
return value;
|
||||
}
|
||||
|
||||
/**
|
||||
* Try to parse a 'expr && expr' expression.
|
||||
* @param lexer the lexer to get tokens from.
|
||||
* @param defines the set of known defines.
|
||||
* @param verbose whether to give verbose debugging information.
|
||||
* @return the value of the expression.
|
||||
*/
|
||||
bool ExpressionAnd(Lexer *lexer, StringSet *defines, bool verbose)
|
||||
{
|
||||
bool value = ExpressionDefined(lexer, defines, verbose);
|
||||
|
||||
while (true) {
|
||||
if (lexer->GetToken() != TOKEN_AND) return value;
|
||||
if (verbose) fprintf(stderr, " && ");
|
||||
lexer->Lex();
|
||||
value = value && ExpressionDefined(lexer, defines, verbose);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Try to parse a 'expr || expr' expression.
|
||||
* @param lexer the lexer to get tokens from.
|
||||
* @param defines the set of known defines.
|
||||
* @param verbose whether to give verbose debugging information.
|
||||
* @return the value of the expression.
|
||||
*/
|
||||
bool ExpressionOr(Lexer *lexer, StringSet *defines, bool verbose)
|
||||
{
|
||||
bool value = ExpressionAnd(lexer, defines, verbose);
|
||||
|
||||
while (true) {
|
||||
if (lexer->GetToken() != TOKEN_OR) return value;
|
||||
if (verbose) fprintf(stderr, " || ");
|
||||
lexer->Lex();
|
||||
value = value || ExpressionAnd(lexer, defines, verbose);
|
||||
}
|
||||
}
|
||||
|
||||
/** Enumerator to tell how long to ignore 'stuff'. */
|
||||
enum Ignore {
|
||||
NOT_IGNORE, ///< No ignoring.
|
||||
IGNORE_UNTIL_ELSE, ///< Ignore till a #else is reached.
|
||||
IGNORE_UNTIL_ENDIF, ///< Ignore till a #endif is reached.
|
||||
};
|
||||
|
||||
/**
|
||||
* Scan a file for includes, defines and the lot.
|
||||
* @param filename the name of the file to scan.
|
||||
* @param ext the extension of the filename.
|
||||
* @param header whether the file is a header or not.
|
||||
* @param verbose whether to give verbose debugging information.
|
||||
*/
|
||||
void ScanFile(const char *filename, const char *ext, bool header, bool verbose)
|
||||
{
|
||||
static StringSet defines;
|
||||
static std::stack<Ignore> ignore;
|
||||
/* Copy in the default defines (parameters of depend) */
|
||||
if (!header) {
|
||||
for (StringSet::iterator it = _defines.begin(); it != _defines.end(); it++) {
|
||||
defines.insert(strdup(*it));
|
||||
}
|
||||
}
|
||||
|
||||
File file(filename);
|
||||
Lexer lexer(&file);
|
||||
|
||||
/* Start the lexing! */
|
||||
lexer.Lex();
|
||||
|
||||
while (lexer.GetToken() != TOKEN_END) {
|
||||
switch (lexer.GetToken()) {
|
||||
/* We reached the end of the file... yay, we're done! */
|
||||
case TOKEN_END: break;
|
||||
|
||||
/* The line started with a # (minus whitespace) */
|
||||
case TOKEN_SHARP:
|
||||
lexer.Lex();
|
||||
switch (lexer.GetToken()) {
|
||||
case TOKEN_INCLUDE:
|
||||
if (verbose) fprintf(stderr, "%s #include ", filename);
|
||||
lexer.Lex();
|
||||
switch (lexer.GetToken()) {
|
||||
case TOKEN_LOCAL:
|
||||
case TOKEN_GLOBAL: {
|
||||
if (verbose) fprintf(stderr, "%s", lexer.GetString());
|
||||
if (!ignore.empty() && ignore.top() != NOT_IGNORE) {
|
||||
if (verbose) fprintf(stderr, " (ignored)");
|
||||
break;
|
||||
}
|
||||
const char *h = GeneratePath(file.GetDirname(), lexer.GetString(), lexer.GetToken() == TOKEN_LOCAL);
|
||||
if (h != NULL) {
|
||||
StringMap::iterator it = _headers.find(h);
|
||||
if (it == _headers.end()) {
|
||||
it = (_headers.insert(StringMapItem(strdup(h), new StringSet()))).first;
|
||||
if (verbose) fprintf(stderr, "\n");
|
||||
ScanFile(h, ext, true, verbose);
|
||||
}
|
||||
StringMap::iterator curfile;
|
||||
if (header) {
|
||||
curfile = _headers.find(filename);
|
||||
} else {
|
||||
/* Replace the extension with the provided extension of '.o'. */
|
||||
char path[PATH_MAX];
|
||||
strcpy(path, filename);
|
||||
*(strchr(path, '.')) = '\0';
|
||||
strcat(path, ext != NULL ? ext : ".o");
|
||||
curfile = _files.find(path);
|
||||
if (curfile == _files.end()) {
|
||||
curfile = (_files.insert(StringMapItem(strdup(path), new StringSet()))).first;
|
||||
}
|
||||
}
|
||||
if (it != _headers.end()) {
|
||||
for (StringSet::iterator header = it->second->begin(); header != it->second->end(); header++) {
|
||||
if (curfile->second->find(*header) == curfile->second->end()) curfile->second->insert(strdup(*header));
|
||||
}
|
||||
}
|
||||
if (curfile->second->find(h) == curfile->second->end()) curfile->second->insert(strdup(h));
|
||||
free((void*)h);
|
||||
}
|
||||
}
|
||||
/* Fall through */
|
||||
default: break;
|
||||
}
|
||||
break;
|
||||
|
||||
case TOKEN_DEFINE:
|
||||
if (verbose) fprintf(stderr, "%s #define ", filename);
|
||||
lexer.Lex();
|
||||
if (lexer.GetToken() == TOKEN_IDENTIFIER) {
|
||||
if (verbose) fprintf(stderr, "%s", lexer.GetString());
|
||||
if (!ignore.empty() && ignore.top() != NOT_IGNORE) {
|
||||
if (verbose) fprintf(stderr, " (ignored)");
|
||||
break;
|
||||
}
|
||||
if (defines.find(lexer.GetString()) == defines.end()) defines.insert(strdup(lexer.GetString()));
|
||||
lexer.Lex();
|
||||
}
|
||||
break;
|
||||
|
||||
case TOKEN_UNDEF:
|
||||
if (verbose) fprintf(stderr, "%s #undef ", filename);
|
||||
lexer.Lex();
|
||||
if (lexer.GetToken() == TOKEN_IDENTIFIER) {
|
||||
if (verbose) fprintf(stderr, "%s", lexer.GetString());
|
||||
if (!ignore.empty() && ignore.top() != NOT_IGNORE) {
|
||||
if (verbose) fprintf(stderr, " (ignored)");
|
||||
break;
|
||||
}
|
||||
StringSet::iterator it = defines.find(lexer.GetString());
|
||||
if (it != defines.end()) {
|
||||
free((void*)*it);
|
||||
defines.erase(it);
|
||||
}
|
||||
lexer.Lex();
|
||||
}
|
||||
break;
|
||||
|
||||
case TOKEN_ENDIF:
|
||||
if (verbose) fprintf(stderr, "%s #endif", filename);
|
||||
lexer.Lex();
|
||||
if (!ignore.empty()) ignore.pop();
|
||||
if (verbose) fprintf(stderr, " -> %signore", (!ignore.empty() && ignore.top() != NOT_IGNORE) ? "" : "not ");
|
||||
break;
|
||||
|
||||
case TOKEN_ELSE: {
|
||||
if (verbose) fprintf(stderr, "%s #else", filename);
|
||||
lexer.Lex();
|
||||
Ignore last = ignore.empty() ? NOT_IGNORE : ignore.top();
|
||||
if (!ignore.empty()) ignore.pop();
|
||||
if (ignore.empty() || ignore.top() == NOT_IGNORE) {
|
||||
ignore.push(last == IGNORE_UNTIL_ELSE ? NOT_IGNORE : IGNORE_UNTIL_ENDIF);
|
||||
} else {
|
||||
ignore.push(IGNORE_UNTIL_ENDIF);
|
||||
}
|
||||
if (verbose) fprintf(stderr, " -> %signore", (!ignore.empty() && ignore.top() != NOT_IGNORE) ? "" : "not ");
|
||||
break;
|
||||
}
|
||||
|
||||
case TOKEN_ELIF: {
|
||||
if (verbose) fprintf(stderr, "%s #elif ", filename);
|
||||
lexer.Lex();
|
||||
Ignore last = ignore.empty() ? NOT_IGNORE : ignore.top();
|
||||
if (!ignore.empty()) ignore.pop();
|
||||
if (ignore.empty() || ignore.top() == NOT_IGNORE) {
|
||||
bool value = ExpressionOr(&lexer, &defines, verbose);
|
||||
ignore.push(last == IGNORE_UNTIL_ELSE ? (value ? NOT_IGNORE : IGNORE_UNTIL_ELSE) : IGNORE_UNTIL_ENDIF);
|
||||
} else {
|
||||
ignore.push(IGNORE_UNTIL_ENDIF);
|
||||
}
|
||||
if (verbose) fprintf(stderr, " -> %signore", (!ignore.empty() && ignore.top() != NOT_IGNORE) ? "" : "not ");
|
||||
break;
|
||||
}
|
||||
|
||||
case TOKEN_IF: {
|
||||
if (verbose) fprintf(stderr, "%s #if ", filename);
|
||||
lexer.Lex();
|
||||
if (ignore.empty() || ignore.top() == NOT_IGNORE) {
|
||||
bool value = ExpressionOr(&lexer, &defines, verbose);
|
||||
ignore.push(value ? NOT_IGNORE : IGNORE_UNTIL_ELSE);
|
||||
} else {
|
||||
ignore.push(IGNORE_UNTIL_ENDIF);
|
||||
}
|
||||
if (verbose) fprintf(stderr, " -> %signore", (!ignore.empty() && ignore.top() != NOT_IGNORE) ? "" : "not ");
|
||||
break;
|
||||
}
|
||||
|
||||
case TOKEN_IFDEF:
|
||||
if (verbose) fprintf(stderr, "%s #ifdef ", filename);
|
||||
lexer.Lex();
|
||||
if (lexer.GetToken() == TOKEN_IDENTIFIER) {
|
||||
bool value = defines.find(lexer.GetString()) != defines.end();
|
||||
if (verbose) fprintf(stderr, "%s[%d]", lexer.GetString(), value);
|
||||
if (ignore.empty() || ignore.top() == NOT_IGNORE) {
|
||||
ignore.push(value ? NOT_IGNORE : IGNORE_UNTIL_ELSE);
|
||||
} else {
|
||||
ignore.push(IGNORE_UNTIL_ENDIF);
|
||||
}
|
||||
}
|
||||
if (verbose) fprintf(stderr, " -> %signore", (!ignore.empty() && ignore.top() != NOT_IGNORE) ? "" : "not ");
|
||||
break;
|
||||
|
||||
case TOKEN_IFNDEF:
|
||||
if (verbose) fprintf(stderr, "%s #ifndef ", filename);
|
||||
lexer.Lex();
|
||||
if (lexer.GetToken() == TOKEN_IDENTIFIER) {
|
||||
bool value = defines.find(lexer.GetString()) != defines.end();
|
||||
if (verbose) fprintf(stderr, "%s[%d]", lexer.GetString(), value);
|
||||
if (ignore.empty() || ignore.top() == NOT_IGNORE) {
|
||||
ignore.push(!value ? NOT_IGNORE : IGNORE_UNTIL_ELSE);
|
||||
} else {
|
||||
ignore.push(IGNORE_UNTIL_ENDIF);
|
||||
}
|
||||
}
|
||||
if (verbose) fprintf(stderr, " -> %signore", (!ignore.empty() && ignore.top() != NOT_IGNORE) ? "" : "not ");
|
||||
break;
|
||||
|
||||
default:
|
||||
if (verbose) fprintf(stderr, "%s #<unknown>", filename);
|
||||
lexer.Lex();
|
||||
break;
|
||||
}
|
||||
if (verbose) fprintf(stderr, "\n");
|
||||
/* Fall through */
|
||||
default:
|
||||
/* Ignore the rest of the garbage on this line */
|
||||
while (lexer.GetToken() != TOKEN_EOL && lexer.GetToken() != TOKEN_END) lexer.Lex();
|
||||
lexer.Lex();
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (!header) {
|
||||
for (StringSet::iterator it = defines.begin(); it != defines.end(); it++) {
|
||||
free((void*)*it);
|
||||
}
|
||||
defines.clear();
|
||||
while (!ignore.empty()) ignore.pop();
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Entry point. Arguably the most common function in all applications.
|
||||
* @param argc the number of arguments.
|
||||
* @param argv the actual arguments.
|
||||
* @return return value for the caller to tell we succeed or not.
|
||||
*/
|
||||
int main(int argc, char *argv[])
|
||||
{
|
||||
bool ignorenext = true;
|
||||
char *filename = NULL;
|
||||
char *ext = NULL;
|
||||
bool append = false;
|
||||
bool verbose = false;
|
||||
|
||||
for (int i = 0; i < argc; i++) {
|
||||
if (ignorenext) {
|
||||
ignorenext = false;
|
||||
continue;
|
||||
}
|
||||
if (argv[i][0] == '-') {
|
||||
/* Append */
|
||||
if (strncmp(argv[i], "-a", 2) == 0) append = true;
|
||||
/* Include dir */
|
||||
if (strncmp(argv[i], "-I", 2) == 0) {
|
||||
if (argv[i][2] == '\0') {
|
||||
i++;
|
||||
_include_dirs.insert(strdup(argv[i]));
|
||||
} else {
|
||||
_include_dirs.insert(strdup(&argv[i][2]));
|
||||
}
|
||||
continue;
|
||||
}
|
||||
/* Define */
|
||||
if (strncmp(argv[i], "-D", 2) == 0) {
|
||||
char *p = strchr(argv[i], '=');
|
||||
if (p != NULL) *p = '\0';
|
||||
_defines.insert(strdup(&argv[i][2]));
|
||||
continue;
|
||||
}
|
||||
/* Output file */
|
||||
if (strncmp(argv[i], "-f", 2) == 0) {
|
||||
if (filename != NULL) continue;
|
||||
filename = strdup(&argv[i][2]);
|
||||
continue;
|
||||
}
|
||||
/* Object file extension */
|
||||
if (strncmp(argv[i], "-o", 2) == 0) {
|
||||
if (ext != NULL) continue;
|
||||
ext = strdup(&argv[i][2]);
|
||||
continue;
|
||||
}
|
||||
/* Verbose */
|
||||
if (strncmp(argv[i], "-v", 2) == 0) verbose = true;
|
||||
continue;
|
||||
}
|
||||
ScanFile(argv[i], ext, false, verbose);
|
||||
}
|
||||
|
||||
/* Default output file is Makefile */
|
||||
if (filename == NULL) filename = strdup("Makefile");
|
||||
|
||||
char backup[PATH_MAX];
|
||||
strcpy(backup, filename);
|
||||
strcat(backup, ".bak");
|
||||
|
||||
char *content = NULL;
|
||||
long size = 0;
|
||||
|
||||
/* Read in the current file; so we can overwrite everything from the
|
||||
* end of non-depend data marker down till the end. */
|
||||
FILE *src = fopen(filename, "rb");
|
||||
if (src != NULL) {
|
||||
fseek(src, 0, SEEK_END);
|
||||
size = ftell(src);
|
||||
rewind(src);
|
||||
content = (char*)malloc(size * sizeof(*content));
|
||||
fread(content, 1, size, src);
|
||||
fclose(src);
|
||||
}
|
||||
|
||||
FILE *dst = fopen(backup, "wb");
|
||||
if (content != NULL) fwrite(content, 1, size, dst);
|
||||
fclose(dst);
|
||||
|
||||
/* Then append it to the real file. */
|
||||
src = fopen(backup, "r");
|
||||
dst = fopen(filename, "w");
|
||||
while (fgets(content, size, src) != NULL) {
|
||||
fputs(content, dst);
|
||||
if (!append && !strncmp(content, "# DO NOT DELETE", 15)) break;
|
||||
}
|
||||
if (ftell(src) == 0) fprintf(dst, "\n# DO NOT DELETE\n");
|
||||
for (StringMap::iterator it = _files.begin(); it != _files.end(); it++) {
|
||||
for (StringSet::iterator h = it->second->begin(); h != it->second->end(); h++) {
|
||||
fprintf(dst, "%s: %s\n", it->first, *h);
|
||||
}
|
||||
}
|
||||
|
||||
/* Clean up our mess. */
|
||||
fclose(dst);
|
||||
fclose(src);
|
||||
|
||||
free(filename);
|
||||
free(ext);
|
||||
free(content);
|
||||
|
||||
for (StringMap::iterator it = _files.begin(); it != _files.end(); it++) {
|
||||
for (StringSet::iterator h = it->second->begin(); h != it->second->end(); h++) {
|
||||
free((void*)*h);
|
||||
}
|
||||
it->second->clear();
|
||||
delete it->second;
|
||||
free((void*)it->first);
|
||||
}
|
||||
_files.clear();
|
||||
|
||||
for (StringMap::iterator it = _headers.begin(); it != _headers.end(); it++) {
|
||||
for (StringSet::iterator h = it->second->begin(); h != it->second->end(); h++) {
|
||||
free((void*)*h);
|
||||
}
|
||||
it->second->clear();
|
||||
delete it->second;
|
||||
free((void*)it->first);
|
||||
}
|
||||
_headers.clear();
|
||||
|
||||
for (StringSet::iterator it = _defines.begin(); it != _defines.end(); it++) {
|
||||
free((void*)*it);
|
||||
}
|
||||
_defines.clear();
|
||||
|
||||
for (StringSet::iterator it = _include_dirs.begin(); it != _include_dirs.end(); it++) {
|
||||
free((void*)*it);
|
||||
}
|
||||
_include_dirs.clear();
|
||||
|
||||
return 0;
|
||||
}
|
||||
Reference in New Issue
Block a user