comparison: src/c2html.c
src/c2html.c
- changeset 1
- 12c482ea4fc4
- parent 0
- e78e463e1aa9
- child 2
- 3bced1fe9193
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| 0:e78e463e1aa9 | 1:12c482ea4fc4 |
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| 1 int main(int argc, char** argv) { | 1 /* |
| 2 return 0; | 2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. |
| 3 * | |
| 4 * Copyright 2013 Mike Becker. All rights reserved. | |
| 5 * | |
| 6 * Redistribution and use in source and binary forms, with or without | |
| 7 * modification, are permitted provided that the following conditions are met: | |
| 8 * | |
| 9 * 1. Redistributions of source code must retain the above copyright | |
| 10 * notice, this list of conditions and the following disclaimer. | |
| 11 * | |
| 12 * 2. Redistributions in binary form must reproduce the above copyright | |
| 13 * notice, this list of conditions and the following disclaimer in the | |
| 14 * documentation and/or other materials provided with the distribution. | |
| 15 * | |
| 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
| 17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE | |
| 20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
| 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
| 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
| 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
| 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
| 26 * POSSIBILITY OF SUCH DAMAGE. | |
| 27 * | |
| 28 */ | |
| 29 | |
| 30 #include <stdio.h> | |
| 31 #include <stdlib.h> | |
| 32 #include <string.h> | |
| 33 #include <fcntl.h> | |
| 34 #include <unistd.h> | |
| 35 #include "c2html.h" | |
| 36 | |
| 37 inputfile_t *inputfilebuffer(size_t capacity) { | |
| 38 inputfile_t *inputfile = (inputfile_t*) malloc(sizeof(inputfile_t)); | |
| 39 inputfile->lines = (char**) malloc(capacity * sizeof(char*)); | |
| 40 inputfile->capacity = capacity; | |
| 41 inputfile->count = 0; | |
| 42 | |
| 43 return inputfile; | |
| 3 } | 44 } |
| 4 | 45 |
| 46 void addline(inputfile_t *inputfile, char* line, size_t width) { | |
| 47 char *l = (char*) malloc(width+1); | |
| 48 memcpy(l, line, width); | |
| 49 l[width] = 0; | |
| 50 if (inputfile->count >= inputfile->capacity) { | |
| 51 inputfile->capacity <<= 1; | |
| 52 inputfile->lines = realloc(inputfile->lines, inputfile->capacity); | |
| 53 } | |
| 54 inputfile->lines[inputfile->count] = l; | |
| 55 inputfile->count++; | |
| 56 } | |
| 57 | |
| 58 void freeinputfilebuffer(inputfile_t *inputfile) { | |
| 59 for (int i = 0 ; i < inputfile->count ; i++) { | |
| 60 free(inputfile->lines[i]); | |
| 61 } | |
| 62 free(inputfile->lines); | |
| 63 free(inputfile); | |
| 64 } | |
| 65 | |
| 66 inputfile_t *readinput(char *filename) { | |
| 67 | |
| 68 int fd = open(filename, O_RDONLY); | |
| 69 if (fd == -1) return NULL; | |
| 70 | |
| 71 inputfile_t *inputfile = inputfilebuffer(512); | |
| 72 | |
| 73 const size_t bufsize = 1024; | |
| 74 char buf[bufsize]; | |
| 75 ssize_t r; | |
| 76 | |
| 77 size_t maxlinewidth = 80; | |
| 78 char *line = (char*) malloc(maxlinewidth); | |
| 79 size_t col = 0; | |
| 80 | |
| 81 while ((r = read(fd, buf, bufsize)) > 0) { | |
| 82 for (size_t i = 0 ; i < r ; i++) { | |
| 83 if (col >= maxlinewidth-4) { | |
| 84 maxlinewidth <<= 1; | |
| 85 line = realloc(line, maxlinewidth); | |
| 86 } | |
| 87 | |
| 88 if (buf[i] == '\n') { | |
| 89 line[col] = 0; | |
| 90 addline(inputfile, line, col); | |
| 91 col = 0; | |
| 92 } else if (buf[i] == '<') { | |
| 93 line[col++] = '&'; line[col++] = 'l'; | |
| 94 line[col++] = 't'; line[col++] = ';'; | |
| 95 } else if (buf[i] == '>') { | |
| 96 line[col++] = '&'; line[col++] = 'g'; | |
| 97 line[col++] = 't'; line[col++] = ';'; | |
| 98 } else { | |
| 99 line[col++] = buf[i]; | |
| 100 } | |
| 101 } | |
| 102 } | |
| 103 | |
| 104 free(line); | |
| 105 | |
| 106 close(fd); | |
| 107 | |
| 108 return inputfile; | |
| 109 } | |
| 110 | |
| 111 void printhelp() { | |
| 112 printf("Formats source code using HTML.\n\nUsage:\n" | |
| 113 " c2html [FILE...]" | |
| 114 "\n"); | |
| 115 | |
| 116 | |
| 117 } | |
| 118 | |
| 119 int lnw(size_t lnc) { | |
| 120 int w = 1, p = 1; | |
| 121 while ((p*=10) < lnc) w++; | |
| 122 return w; | |
| 123 } | |
| 124 | |
| 125 int main(int argc, char** argv) { | |
| 126 | |
| 127 if (argc == 1) { | |
| 128 printhelp(); | |
| 129 return 0; | |
| 130 } else { | |
| 131 | |
| 132 inputfile_t *inputfile = readinput(argv[1]); | |
| 133 if (inputfile) { | |
| 134 printf("<pre>\n"); | |
| 135 for (int i = 0 ; i < inputfile->count ; i++) { | |
| 136 printf("%*d: %s\n", lnw(inputfile->count), | |
| 137 i, inputfile->lines[i]); | |
| 138 } | |
| 139 printf("</pre>\n"); | |
| 140 freeinputfilebuffer(inputfile); | |
| 141 } | |
| 142 | |
| 143 return 0; | |
| 144 } | |
| 145 } | |
| 146 |
