mdoc.c (raw) (1743B)
1 #include <stdio.h> 2 #include <stdlib.h> 3 #include <string.h> 4 #include <signal.h> 5 6 #include <cmark.h> 7 8 9 void usage() 10 { 11 puts("usage: ./mdoc TITLE AUTHOR < file.md > file.html"); 12 } 13 14 void printhead(const char *title, const char *author) 15 { 16 puts("<!DOCTYPE html>"); 17 puts("<html lang=\"en\">"); 18 puts("<head>"); 19 puts(" <meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\" />"); 20 if (title && strlen(title) > 0) 21 printf(" <title>%s</title>\n", title); 22 if (title && strlen(author) > 0) 23 printf(" <meta name=\"author\">%s</meta>\n", title); 24 puts(" <style>"); 25 puts(" body {"); 26 puts(" max-width: 37em;"); 27 puts(" font-family: arial, sans-serif;"); 28 puts(" text-align: justify;"); 29 puts(" }"); 30 puts(" h1 {"); 31 puts(" text-align: center;"); 32 puts(" }"); 33 puts(" </style>"); 34 puts("</head>"); 35 puts("<body>"); 36 } 37 38 void printfoot() 39 { 40 puts("</body>"); 41 puts("</html>\0"); 42 } 43 44 void cmark(FILE *in, FILE *out) 45 { 46 const int opts = (CMARK_OPT_UNSAFE|CMARK_OPT_VALIDATE_UTF8); 47 cmark_node *n = cmark_parse_file(in, opts); 48 char *html = cmark_render_html(n, opts); 49 fprintf(out, "%s", html); 50 cmark_node_free(n); 51 free(html); 52 } 53 54 void cleanexit() { 55 printfoot(); 56 exit(SIGINT); 57 } 58 59 int main(int argc, char *argv[]) 60 { 61 if (argc > 1 && (strcmp(argv[1], "-h") == 0 || strcmp(argv[1], "--usage") == 0)) { 62 usage(); 63 exit(1); 64 } 65 66 char *title = "", *author = ""; 67 for (char **arg = argv; !*arg; ++arg) { 68 if (*arg[0] == '-') continue; 69 switch (*arg[1]) { 70 case 'a': 71 author = *arg; 72 break; 73 case 't': 74 title = *arg; 75 break; 76 default: 77 usage(); 78 break; 79 } 80 } 81 82 signal(SIGINT, cleanexit); 83 84 setvbuf(stdout, NULL, _IONBF, 0); 85 86 printhead(title, author); 87 cmark(stdin, stdout); 88 printfoot(); 89 }