120 lines
1.9 KiB
C
120 lines
1.9 KiB
C
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#define TOC_ENTRIES 512
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#define TOC_ENTRY_SIZE 1024
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char toc_start[] = "[tocstart]: # (toc start)";
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char toc_end[] = "[tocend]: # (toc end)";
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char toc[TOC_ENTRIES][TOC_ENTRY_SIZE];
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int toc_level[TOC_ENTRIES];
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int toc_cnt = 0;
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void add_toc(int level, char *entry)
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{
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strncpy( toc[toc_cnt], entry, TOC_ENTRY_SIZE);
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toc[toc_cnt][TOC_ENTRY_SIZE-1] = '\0';
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toc_level[toc_cnt] = level;
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toc_cnt++;
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printf("%d: %s\n", level, entry);
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}
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void read_md_fp(FILE *in, FILE *out)
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{
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static char buf[TOC_ENTRY_SIZE];
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char *s;
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int is_inside_toc = 0;
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int is_start_of_file = 1;
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for(;;)
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{
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s = fgets(buf, TOC_ENTRY_SIZE, in);
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if ( s == NULL )
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return;
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if ( is_inside_toc != 0 )
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{
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if ( strcmp(s, toc_end) == 0 )
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{
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is_inside_toc = 0;
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}
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}
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else
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{
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if ( buf[0] == '\0' )
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{
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/* skip empty lines at the beginning of the file */
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if ( is_start_of_file == 0 )
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fputs(buf, out);
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}
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else if ( strcmp(s, toc_start) == 0 )
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{
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is_start_of_file = 0;
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is_inside_toc = 1;
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}
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else if ( strncmp(s, "# ", 2) == 0 )
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{
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is_start_of_file = 0;
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add_toc(1, s+2);
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fputs(buf, out);
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}
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else if ( strncmp(s, "## ", 3) == 0 )
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{
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is_start_of_file = 0;
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add_toc(2, s+3);
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fputs(buf, out);
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}
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else
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{
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is_start_of_file = 0;
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fputs(buf, out);
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}
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}
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}
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}
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void read_md(const char *in_name, const char *out_name)
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{
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FILE *in;
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FILE *out;
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in = fopen(in_name, "r");
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if ( in == NULL )
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{
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perror(in_name);
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return;
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}
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out = fopen(out_name, "w");
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if ( out == NULL )
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{
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perror(out_name);
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return;
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}
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read_md_fp(in, out);
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fclose(in);
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fclose(out);
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}
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int main(int argc, char **argv)
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{
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if ( argc <= 1 )
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{
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printf("%s [markdown files]\n", argv[0]);
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return 1;
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}
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argv++;
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while( *argv != NULL )
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{
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toc_cnt = 0;
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read_md(*argv, "tmp.md");
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argv++;
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}
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}
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