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Copy pathmain.c
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328 lines (290 loc) · 9.62 KB
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#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include "config.h"
#include "cmark-gfm.h"
#include "node.h"
#include "cmark-gfm-extension_api.h"
#include "syntax_extension.h"
#include "parser.h"
#include "registry.h"
#include "../extensions/cmark-gfm-core-extensions.h"
#if defined(__OpenBSD__)
# include <sys/param.h>
# if OpenBSD >= 201605
# define USE_PLEDGE
# include <unistd.h>
# endif
#endif
#if defined(__OpenBSD__)
# include <sys/param.h>
# if OpenBSD >= 201605
# define USE_PLEDGE
# include <unistd.h>
# endif
#endif
#if defined(_WIN32) && !defined(__CYGWIN__)
#include <io.h>
#include <fcntl.h>
#endif
typedef enum {
FORMAT_NONE,
FORMAT_HTML,
FORMAT_XML,
FORMAT_MAN,
FORMAT_COMMONMARK,
FORMAT_PLAINTEXT,
FORMAT_LATEX
} writer_format;
void print_usage() {
printf("Usage: cmark-gfm [FILE*]\n");
printf("Options:\n");
printf(" --to, -t FORMAT Specify output format (html, xml, man, "
"commonmark, plaintext, latex)\n");
printf(" --width WIDTH Specify wrap width (default 0 = nowrap)\n");
printf(" --sourcepos Include source position attribute\n");
printf(" --hardbreaks Treat newlines as hard line breaks\n");
printf(" --nobreaks Render soft line breaks as spaces\n");
printf(" --unsafe Render raw HTML and dangerous URLs\n");
printf(" --smart Use smart punctuation\n");
printf(" --validate-utf8 Replace UTF-8 invalid sequences with U+FFFD\n");
printf(" --github-pre-lang Use GitHub-style <pre lang> for code blocks\n");
printf(" --extension, -e EXTENSION_NAME Specify an extension name to use\n");
printf(" --list-extensions List available extensions and quit\n");
printf(" --strikethrough-double-tilde Only parse strikethrough (if enabled)\n");
printf(" with two tildes\n");
printf(" --table-prefer-style-attributes Use style attributes to align table cells\n"
" instead of align attributes.\n");
printf(" --full-info-string Include remainder of code block info\n"
" string in a separate attribute.\n");
printf(" --help, -h Print usage information\n");
printf(" --version Print version\n");
}
static bool print_document(cmark_node *document, writer_format writer,
int options, int width, cmark_parser *parser) {
char *result;
cmark_mem *mem = cmark_get_default_mem_allocator();
switch (writer) {
case FORMAT_HTML:
result = cmark_render_html_with_mem(document, options, parser->syntax_extensions, mem);
break;
case FORMAT_XML:
result = cmark_render_xml_with_mem(document, options, mem);
break;
case FORMAT_MAN:
result = cmark_render_man_with_mem(document, options, width, mem);
break;
case FORMAT_COMMONMARK:
result = cmark_render_commonmark_with_mem(document, options, width, mem);
break;
case FORMAT_PLAINTEXT:
result = cmark_render_plaintext_with_mem(document, options, width, mem);
break;
case FORMAT_LATEX:
result = cmark_render_latex_with_mem(document, options, width, mem);
break;
default:
fprintf(stderr, "Unknown format %d\n", writer);
return false;
}
printf("%s", result);
mem->free(result);
return true;
}
static void print_extensions(void) {
cmark_llist *syntax_extensions;
cmark_llist *tmp;
printf ("Available extensions:\nfootnotes\n");
cmark_mem *mem = cmark_get_default_mem_allocator();
syntax_extensions = cmark_list_syntax_extensions(mem);
for (tmp = syntax_extensions; tmp; tmp=tmp->next) {
cmark_syntax_extension *ext = (cmark_syntax_extension *) tmp->data;
printf("%s\n", ext->name);
}
cmark_llist_free(mem, syntax_extensions);
}
int main(int argc, char *argv[]) {
int i, numfps = 0;
int *files;
char buffer[4096];
cmark_parser *parser = NULL;
size_t bytes;
cmark_node *document = NULL;
int width = 0;
char *unparsed;
writer_format writer = FORMAT_HTML;
int options = CMARK_OPT_DEFAULT;
int res = 1;
#ifdef USE_PLEDGE
if (pledge("stdio rpath", NULL) != 0) {
perror("pledge");
return 1;
}
#endif
cmark_gfm_core_extensions_ensure_registered();
#ifdef USE_PLEDGE
if (pledge("stdio rpath", NULL) != 0) {
perror("pledge");
return 1;
}
#endif
#if defined(_WIN32) && !defined(__CYGWIN__)
_setmode(_fileno(stdin), _O_BINARY);
_setmode(_fileno(stdout), _O_BINARY);
#endif
files = (int *)calloc(argc, sizeof(*files));
for (i = 1; i < argc; i++) {
if (strcmp(argv[i], "--version") == 0) {
printf("cmark-gfm %s", CMARK_GFM_VERSION_STRING);
printf(" - CommonMark with GitHub Flavored Markdown converter\n(C) 2014-2016 John MacFarlane\n");
goto success;
} else if (strcmp(argv[i], "--list-extensions") == 0) {
print_extensions();
goto success;
} else if (strcmp(argv[i], "--full-info-string") == 0) {
options |= CMARK_OPT_FULL_INFO_STRING;
} else if (strcmp(argv[i], "--table-prefer-style-attributes") == 0) {
options |= CMARK_OPT_TABLE_PREFER_STYLE_ATTRIBUTES;
} else if (strcmp(argv[i], "--strikethrough-double-tilde") == 0) {
options |= CMARK_OPT_STRIKETHROUGH_DOUBLE_TILDE;
} else if (strcmp(argv[i], "--sourcepos") == 0) {
options |= CMARK_OPT_SOURCEPOS;
} else if (strcmp(argv[i], "--hardbreaks") == 0) {
options |= CMARK_OPT_HARDBREAKS;
} else if (strcmp(argv[i], "--nobreaks") == 0) {
options |= CMARK_OPT_NOBREAKS;
} else if (strcmp(argv[i], "--smart") == 0) {
options |= CMARK_OPT_SMART;
} else if (strcmp(argv[i], "--github-pre-lang") == 0) {
options |= CMARK_OPT_GITHUB_PRE_LANG;
} else if (strcmp(argv[i], "--unsafe") == 0) {
options |= CMARK_OPT_UNSAFE;
} else if (strcmp(argv[i], "--validate-utf8") == 0) {
options |= CMARK_OPT_VALIDATE_UTF8;
} else if (strcmp(argv[i], "--liberal-html-tag") == 0) {
options |= CMARK_OPT_LIBERAL_HTML_TAG;
} else if ((strcmp(argv[i], "--help") == 0) ||
(strcmp(argv[i], "-h") == 0)) {
print_usage();
goto success;
} else if (strcmp(argv[i], "--width") == 0) {
i += 1;
if (i < argc) {
width = (int)strtol(argv[i], &unparsed, 10);
if (unparsed && strlen(unparsed) > 0) {
fprintf(stderr, "failed parsing width '%s' at '%s'\n", argv[i],
unparsed);
goto failure;
}
} else {
fprintf(stderr, "--width requires an argument\n");
goto failure;
}
} else if ((strcmp(argv[i], "-t") == 0) || (strcmp(argv[i], "--to") == 0)) {
i += 1;
if (i < argc) {
if (strcmp(argv[i], "man") == 0) {
writer = FORMAT_MAN;
} else if (strcmp(argv[i], "html") == 0) {
writer = FORMAT_HTML;
} else if (strcmp(argv[i], "xml") == 0) {
writer = FORMAT_XML;
} else if (strcmp(argv[i], "commonmark") == 0) {
writer = FORMAT_COMMONMARK;
} else if (strcmp(argv[i], "plaintext") == 0) {
writer = FORMAT_PLAINTEXT;
} else if (strcmp(argv[i], "latex") == 0) {
writer = FORMAT_LATEX;
} else {
fprintf(stderr, "Unknown format %s\n", argv[i]);
goto failure;
}
} else {
fprintf(stderr, "No argument provided for %s\n", argv[i - 1]);
goto failure;
}
} else if ((strcmp(argv[i], "-e") == 0) || (strcmp(argv[i], "--extension") == 0)) {
i += 1; // Simpler to handle extensions in a second pass, as we can directly register
// them with the parser.
if (i < argc && strcmp(argv[i], "footnotes") == 0) {
options |= CMARK_OPT_FOOTNOTES;
}
} else if (*argv[i] == '-') {
print_usage();
goto failure;
} else { // treat as file argument
files[numfps++] = i;
}
}
#if DEBUG
parser = cmark_parser_new(options);
#else
parser = cmark_parser_new_with_mem(options, cmark_get_arena_mem_allocator());
#endif
for (i = 1; i < argc; i++) {
if ((strcmp(argv[i], "-e") == 0) || (strcmp(argv[i], "--extension") == 0)) {
i += 1;
if (i < argc) {
if (strcmp(argv[i], "footnotes") == 0) {
continue;
}
cmark_syntax_extension *syntax_extension = cmark_find_syntax_extension(argv[i]);
if (!syntax_extension) {
fprintf(stderr, "Unknown extension %s\n", argv[i]);
goto failure;
}
cmark_parser_attach_syntax_extension(parser, syntax_extension);
} else {
fprintf(stderr, "No argument provided for %s\n", argv[i - 1]);
goto failure;
}
}
}
for (i = 0; i < numfps; i++) {
FILE *fp = fopen(argv[files[i]], "rb");
if (fp == NULL) {
fprintf(stderr, "Error opening file %s: %s\n", argv[files[i]],
strerror(errno));
goto failure;
}
while ((bytes = fread(buffer, 1, sizeof(buffer), fp)) > 0) {
cmark_parser_feed(parser, buffer, bytes);
if (bytes < sizeof(buffer)) {
break;
}
}
fclose(fp);
}
if (numfps == 0) {
while ((bytes = fread(buffer, 1, sizeof(buffer), stdin)) > 0) {
cmark_parser_feed(parser, buffer, bytes);
if (bytes < sizeof(buffer)) {
break;
}
}
}
#ifdef USE_PLEDGE
if (pledge("stdio", NULL) != 0) {
perror("pledge");
return 1;
}
#endif
document = cmark_parser_finish(parser);
if (!document || !print_document(document, writer, options, width, parser))
goto failure;
success:
res = 0;
failure:
#if DEBUG
if (parser)
cmark_parser_free(parser);
if (document)
cmark_node_free(document);
#else
cmark_arena_reset();
#endif
cmark_release_plugins();
free(files);
return res;
}
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