c2html: src/c2html.c@534a4ef4143d (annotated)

src/c2html.c@534a4ef4143d (annotated)

src/c2html.c

Tue, 23 Aug 2016 15:55:02 +0200

author: Mike Becker <universe@uap-core.de>
date: Tue, 23 Aug 2016 15:55:02 +0200
changeset 46: 534a4ef4143d
parent 45: 1f3835182aeb
child 47: c39ecbbca7c0
permissions: -rw-r--r--

refactors highlighter_t and removes abstraction overhead

 /*
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
  *
  * Copyright 2016 Mike Becker. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  *   1. Redistributions of source code must retain the above copyright
  *      notice, this list of conditions and the following disclaimer.
  *
  *   2. Redistributions in binary form must reproduce the above copyright
  *      notice, this list of conditions and the following disclaimer in the
  *      documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  * POSSIBILITY OF SUCH DAMAGE.
  *
  */
 #include "c2html.h"
 #include "ucx/buffer.h"
 #include "ucx/list.h"
 #include "ucx/utils.h"
 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"
         "  -l                    Disable line numbers\n"
         "  -V, -v                Prints version and exits\n"
         "\n");
 }
 /* TODO: remove this workaround after refactoring highlighter structure */
 static void plainparseline(char *src, UcxBuffer *dest, HighlighterData* hltr) {
     size_t dp = 0;
     char *buf = dest->space + dest->pos;
     while (*src && *src != '\n') {
         dp = writeescapedchar(buf, dp, *src);
         src++;
     }
     buf[dp++] = '\n';
     buf[dp] = '\0';
     dest->pos += dp;
     dest->size += dp;
 }
 int formatlines(highlighter_func highlighter,
         UcxList *in, write_func out, void *stream, int showlineno) {
     /* compute width of line numbering */
     int lnw;
     if (showlineno) {
         size_t lines = ucx_list_size(in);
         lnw = 1;
         int p = 1;
         while ((p*=10) < lines) lnw++;
     }
     /* allocate line buffer */
     UcxBuffer *line = ucx_buffer_new(NULL, 1024, UCX_BUFFER_AUTOEXTEND);
     if(!line) {
         return 1;
     }
     /* start monospace formatting */
     out("<pre>\n", 1, 6, stream);
     /* process lines */
     size_t lineno = 0;
     HighlighterData highlighter_data;
     memset(&highlighter_data, 0, sizeof(HighlighterData));
     UCX_FOREACH(sourceline, in) {
         /* increase line number and clean line buffer */
         lineno++;
         ucx_buffer_clear(line);
         /* write line number */
         if (showlineno) {
             ucx_bprintf(line, "<span class=\"c2html-lineno\">"
                     "<a name=\"l%d\" href=\"#l%d\">%*d </a></span> ",
                     lineno, lineno, lnw, lineno);
         }
         /* process code line */
         highlighter(sourceline->data, line, &highlighter_data);
         /* write code line */
         out(line->space, 1, line->size, stream);
     }
     /* end monospace formatting */
     out("</pre>\n", 1, 7, stream);
     /* cleanup and return */
     ucx_buffer_free(line);
     return 0;
 }
 #define FILEBUF_SIZE 4096
 enum source_type {
     SOURCE_C,
     SOURCE_JAVA,
     SOURCE_PLAIN
 };
 int main(int argc, char** argv) {
     /* Default settings */
     Settings settings;
     memset(&settings, 0, sizeof(settings));
     settings.showlinenumbers = 1;
     enum source_type sourcetype = SOURCE_C;
     /* Parse command line */
     char optc;
     while ((optc = getopt(argc, argv, "hljo:pH:F:vV")) != -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':
                 sourcetype = SOURCE_JAVA;
                 break;
             case 'p':
                 sourcetype = SOURCE_PLAIN;
                 break;
             case 'l':
                 settings.showlinenumbers = 0;
                 break;
             case 'h':
                 printhelp();
                 return EXIT_SUCCESS;
             case 'v':
             case 'V':
 #ifdef VERSION_DEVELOP
                 printf("%d.%d (unstable)\n", VERSION_MAJOR, VERSION_MINOR);
 #else
                 printf("%d.%d\n", VERSION_MAJOR, VERSION_MINOR);
 #endif
                 return EXIT_SUCCESS;
             default:
                 return EXIT_FAILURE;
         }
     }
     if (optind != argc-1) {
         printhelp();
         return EXIT_FAILURE;
     } else {
         /* Configure highlighter */
         highlighter_func hltr = NULL;
         switch (sourcetype) {
             case SOURCE_C:
                 hltr = cparseline;
                 break;
             case SOURCE_JAVA:
                 hltr = jparseline;
                 break;
             case SOURCE_PLAIN:
                 hltr = plainparseline;
                 break;
             default: /* should be unreachable */
                 fprintf(stderr, "error in enum source_type\n");
                 return EXIT_FAILURE;
         }
         /* Open output file */
         settings.infilename = argv[optind];
         FILE *fout;
         if (settings.outfilename) {
             fout = fopen(settings.outfilename, "w");
             if (!fout) {
                 perror("Error opening output file");
                 return EXIT_FAILURE;
             }
         } else {
             fout = stdout;
         }
         /* Allocate file buffer  */
         char *filebuf = malloc(FILEBUF_SIZE);
         if (!filebuf) {
             perror("Error allocating file buffer");
             return EXIT_FAILURE;
         }
         /* Prepend header file */
         {
             FILE *headerfile = fopen(settings.headerfile, "r");
             if (!headerfile) {
                 perror("Error opening header file");
                 if (fout != stdout) {
                     fclose(fout);
                 }
                 return EXIT_FAILURE;
             }
             ucx_stream_copy(headerfile, fout,
                     (read_func) fread, (write_func) fwrite,
                     filebuf, FILEBUF_SIZE, (size_t)-1);
             fclose(headerfile);
         }
         /* Process input file */
         FILE *inputfile = fopen(settings.infilename, "r");
         if (inputfile) {
             UcxBuffer *content = ucx_buffer_new(NULL,
                     FILEBUF_SIZE*2, UCX_BUFFER_AUTOEXTEND);
             {
                 ucx_stream_copy(inputfile, content, (read_func) fread,
                         (write_func) ucx_buffer_write,
                         filebuf, FILEBUF_SIZE, (size_t)-1);
             }
             fclose(inputfile);
             UcxList *inputlines = ucx_list_append(NULL, content->space);
             for (size_t i = 1 ; i < content->size ; i++) {
                 if (content->space[i] == '\r') {
                     content->space[i] = '\n'; i++;
                 }
                 if (content->space[i] == '\n' && i+1 < content->size) {
                     ucx_list_append(inputlines, content->space+i+1);
                 }
             }
             formatlines(hltr, inputlines,
                     (write_func) fwrite, fout, settings.showlinenumbers);
             ucx_buffer_free(content);
         } else {
             perror("Error opening input file");
             if (fout != stdout) {
                 fclose(fout);
             }
             return EXIT_FAILURE;
         }
         /* Append footer file */
         {
             FILE *footerfile = fopen(settings.footerfile, "r");
             if (!footerfile) {
                 perror("Error opening footer file");
                 if (fout != stdout) {
                     fclose(fout);
                 }
                 return EXIT_FAILURE;
             }
             ucx_stream_copy(footerfile, fout,
                     (read_func) fread, (write_func) fwrite,
                     filebuf, FILEBUF_SIZE, (size_t)-1);
             fclose(footerfile);
         }
         free(filebuf);
         return EXIT_SUCCESS;
     }
 }

Mercurial > hg > c2html / annotate

src/c2html.c@534a4ef4143d (annotated)

src/c2html.c