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Viewing changes to bam/src/dep_cpp_2.c

  • Committer: Bazaar Package Importer
  • Author(s): Gonéri Le Bouder
  • Date: 2009-04-12 02:32:37 UTC
  • mfrom: (3.2.1 sid)
  • Revision ID: james.westby@ubuntu.com-20090412023237-ufmf1xn0rkjmx6f3
Tags: 0.5.1-2
http://bugs.debian.org/511600
* Fix the ouput of teeworlds-server --help with /bin/sh ->
  /bin/bash (Closes: #511600)
* Standard version 3.8.1

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Lines of Context:
bam/src/dep_cpp_2.c
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#include <stdio.h>
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#include <stdlib.h>
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static int processline(char *line, char **start, char **end, int *systemheader)
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{
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        const char *include_text = "include";
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        char *current = line;
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        *start = 0;
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        *end = 0;
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        *systemheader = 0;
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        /* search for # */
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        while(*current != '#')
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        {
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                if(*current == ' ' || *current == '\t')
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                        current++; /* next char */
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                else
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                        return 0; /* this catches \0 aswell */
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        }
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        current++; /* skip # */
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        /* search for first character */
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        while(1)
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        {
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                if(*current == ' ' || *current == '\t')
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                        current++;
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                else if(*current == 0)
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                        return 0;
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                else
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                        break;
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        }
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        /* match "include" */
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        while(*include_text)
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        {
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                if(*current == *include_text)
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                {
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                        current++;
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                        include_text++;
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                }
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                else
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                        return 0;
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        }
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        /* search for first character */
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        while(1)
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        {
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                if(*current == ' ' || *current == '\t')
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                        current++;
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                else if(*current == 0)
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                        return 0;
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                else
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                        break;
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        }
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        /* match starting < or " */
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        *start = current+1;
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        if(*current == '<')
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                *systemheader = 1;
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        else if(*current == '"')
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                *systemheader = 0;
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        else
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                return 0;
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        /* skip < or " */
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        current++;
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        /* search for < or " to end it */
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        while(1)
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        {
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                if(*current == '>' || *current == '"')
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                        break;
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                else if(*current == 0)
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                        return 0;
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                else
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                        current++;
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        }
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        *end = current; 
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        return 1;
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}
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/* dependency calculator for c/c++ preprocessor */
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int dependency_cpp_run(const char *filename, 
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                int (*callback)(void *, const char *, int), void *userdata)
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{
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        const int debug = 0;
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        char *linestart;
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        char *includestart;
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        char *includeend;
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        int systemheader;
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        int errorcode = 0;
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        int linecount = 0;
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        /* open file */
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        long filesize;
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        long readitems;
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        char *filebuf;
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        char *filebufcur;
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        char *filebufend;
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        FILE *file;
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        if(debug)
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                printf("cpp-dep: running on %s\n", filename);
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        file = fopen(filename, "rb");
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        if(!file)
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        {
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                /* printf("cpp-dep: error opening %s\n", filename); */
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                return 0;
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        }
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        /* read the whole file */               
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        fseek(file, 0, SEEK_END);
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        filesize = ftell(file);
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        fseek(file, 0, SEEK_SET);
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        filebuf = malloc(filesize+1); /* +1 for null termination */
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122
 
        if(!filebuf)
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        {
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                printf("cpp-dep: error allocating %ld bytes\n", filesize);
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                fclose(file);
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                return 1;
127
 
        }
128
 
                
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        /* read the file and close it */
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        readitems = fread(filebuf, 1, filesize, file);
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        fclose(file);
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133
 
        if(readitems != filesize)
134
 
        {
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                printf("cpp-dep: error reading the complete file. %ld of %ld bytes read\n", readitems, filesize);
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                free(filebuf);
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                return 1;
138
 
        }
139
 
        
140
 
        filebufcur = filebuf;
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        filebufend = filebuf+filesize;
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143
 
        while(filebufcur < filebufend)
144
 
        {
145
 
                /* search for next line */
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                linestart = filebufcur;
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                while(filebufcur != filebufend && *filebufcur != '\n' && *filebufcur != '\r')
148
 
                        filebufcur++;
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                *filebufcur = 0;
150
 
                filebufcur++;
151
 
                linecount++;
152
 
 
153
 
                if(processline(linestart, &includestart, &includeend, &systemheader))
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                {
155
 
                        *includeend = 0;
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                        if(debug) printf("INCLUDE: %s\n", includestart);
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158
 
                        /* run callback */
159
 
                        errorcode = callback(userdata, includestart, systemheader);
160
 
                        if(errorcode)
161
 
                        {
162
 
                                printf("cpp-dep: error %d during callback\n", errorcode);
163
 
                                break;
164
 
                        }
165
 
                }
166
 
        }
167
 
 
168
 
        if(debug)
169
 
                printf("cpp-dep: %s=%d lines\n", filename, linecount);
170
 
        
171
 
        /* clean up */
172
 
        free(filebuf);
173
 
        return errorcode;
174
 
}