c2html: src/c2html.c@f463693b5eeb (annotated)

src/c2html.c@f463693b5eeb (annotated)

src/c2html.c

Thu, 23 Jan 2014 14:17:06 +0100

author: Mike Becker <universe@uap-core.de>
date: Thu, 23 Jan 2014 14:17:06 +0100
changeset 22: f463693b5eeb
parent 21: 537aec525835
child 23: f44a185b678b
permissions: -rw-r--r--

added command line parameters for header and footer file

 #include <errno.h>
 #include "c2html.h"
 inputfile_t *inputfilebuffer(size_t capacity) {
     inputfile_t *inputfile = (inputfile_t*) malloc(sizeof(inputfile_t));
     inputfile->lines = (char**) malloc(capacity * sizeof(char*));
     inputfile->capacity = capacity;
     inputfile->count = 0;
     inputfile->maxlinewidth = 0;
     return inputfile;
 }
 void addline(inputfile_t *inputfile, char* line, size_t width) {
     char *l = (char*) malloc(width+1);
     memcpy(l, line, width);
     l[width] = 0;
     if (inputfile->count >= inputfile->capacity) {
         inputfile->capacity <<= 1;
         inputfile->lines = realloc(inputfile->lines, inputfile->capacity);
     }
     inputfile->lines[inputfile->count] = l;
     inputfile->maxlinewidth =
         width > inputfile->maxlinewidth ? width : inputfile->maxlinewidth;
     inputfile->count++;
 }
 void freeinputfilebuffer(inputfile_t *inputfile) {
     for (int i = 0 ; i < inputfile->count ; i++) {
         free(inputfile->lines[i]);
     }
     free(inputfile->lines);
     free(inputfile);
 }
 inputfile_t *readinput(char *filename) {
     int fd = open(filename, O_RDONLY);
     if (fd == -1) return NULL;
     inputfile_t *inputfile = inputfilebuffer(512);
     char buf[INPUTBUF_SIZE];
     ssize_t r;
     size_t maxlinewidth = 256;
     char *line = (char*) malloc(maxlinewidth);
     size_t col = 0;
     while ((r = read(fd, buf, INPUTBUF_SIZE)) > 0) {
         for (size_t i = 0 ; i < r ; i++) {
             if (col >= maxlinewidth-4) {
                 maxlinewidth <<= 1;
                 line = realloc(line, maxlinewidth);
             }
             if (buf[i] == '\n') {
                 line[col++] = '\n';
                 line[col] = 0;
                 addline(inputfile, line, col);
                 col = 0;
             } else {
                 line[col++] = buf[i];
             }
         }
     }
     free(line);
     close(fd);
     return inputfile;
 }
 void printhelp() {
     printf("Formats source code using HTML.\n\nUsage:\n"
         "  c2html [Options] FILE\n\n"
         " Options:\n"
         "  -h                    Prints this help message\n"
         "  -j                    Highlight Java instead of C source code\n"
         "  -o <output>           Output file (stdout, if not specified)\n"
         "  -H <header>           Prepend header file\n"
         "  -F <footer>           Append footer file\n"
         "  -p                    Disable highlighting (plain text)\n"
         "\n");
 }
 int lnint(size_t lnc) {
     int w = 1, p = 1;
     while ((p*=10) < lnc) w++;
     return w;
 }
 int copyfile(char *filename, FILE *dest) {
     if (!filename) {
         return 0;
     }
     FILE *src = fopen(filename, "r");
     if (src) {
         char buf[4096];
         int r;
         while ((r = fread(buf, 1, 4096, src)) > 0) {
             fwrite(buf, 1, r, dest);
         }
         fclose(src);
         return 0;
     } else {
         return errno;
     }
 }
 int main(int argc, char** argv) {
     int retcode = EXIT_SUCCESS;
     settings_t settings;
     memset(&settings, 0, sizeof(settings));
     settings.highlight = 1;
     highlighter_t highlighter;
     memset(&highlighter, 0, sizeof(highlighter));
     highlighter.isdirective = iscdirective;
     highlighter.istype = isctype;
     highlighter.keywords = ckeywords;
     highlighter.parser = cparseline;
     char optc;
     while ((optc = getopt(argc, argv, "hjo:pH:F:")) != -1) {
         switch (optc) {
             case 'o':
                 if (!(optarg[0] == '-' && optarg[1] == 0)) {
                     settings.outfilename = optarg;
                 }
                 break;
             case 'F':
                 settings.footerfile = optarg;
                 break;
             case 'H':
                 settings.headerfile = optarg;
                 break;
             case 'j':
                 highlighter.isdirective = isjdirective;
                 highlighter.istype = isjtype;
                 highlighter.keywords = jkeywords;
                 highlighter.parser = jparseline;
                 break;
             case 'p':
                 settings.highlight = 0;
                 break;
             case 'h':
                 printhelp();
                 return 0;
             default:
                 return 1;
         }
     }
     if (optind != argc-1) {
         printhelp();
         return 1;
     } else {
         settings.infilename = argv[optind];
         FILE *fout;
         if (settings.outfilename) {
             fout = fopen(settings.outfilename, "w");
             if (!fout) {
                 perror("Error opening output file");
                 return errno;
             }
         } else {
             fout = stdout;
         }
         if (copyfile(settings.headerfile, fout)) {
             perror("Error opening header file");
             retcode = errno;
             goto prog_end;
         }
         inputfile_t *inputfile = readinput(settings.infilename);
         if (inputfile) {
             char *line;
             if (settings.highlight) {
                 line = (char*) malloc(inputfile->maxlinewidth*64);
             } else {
                 line = NULL;
             }
             fprintf(fout, "<pre>\n");
             int lnw = lnint(inputfile->count);
             for (int i = 0 ; i < inputfile->count ; i++) {
                 if (settings.highlight) {
                     highlighter.parser(inputfile->lines[i], line, &highlighter);
                 } else {
                     line = inputfile->lines[i];
                 }
                 fprintf(fout, "<span class=\"c2html-lineno\">%*d:</span> %s",
                     lnw, i+1, line);
             }
             if (settings.highlight) {
                 free(line);
             }
             fprintf(fout, "</pre>\n");
             freeinputfilebuffer(inputfile);
             if (copyfile(settings.footerfile, fout)) {
                 perror("Error opening footer file");
                 retcode = errno;
             }
         } else {
             perror("Error opening input file");
             retcode = errno;
         }
         prog_end:
         if (fout != stdout) {
             fclose(fout);
         }
         return retcode;
     }
 }

Mercurial > hg > c2html / annotate

src/c2html.c@f463693b5eeb (annotated)

src/c2html.c