65 lines
1.3 KiB
C
65 lines
1.3 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#define KiB * 1024
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void read_line(FILE *file, char *line_buffer) {
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if (file == NULL || line_buffer == NULL)
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{
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printf("Error: file or line buffer pointer is null.");
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exit(1);
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}
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int ch = getc(file);
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int count = 0;
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while ((ch != '\n') && (ch != EOF)) {
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line_buffer[count] = ch;
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count++;
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ch = getc(file);
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}
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line_buffer[count] = '\0';
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}
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char source[16 KiB];
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int fenced(char *s)
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{
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int a = strcmp(s, "```");
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int b = strcmp(s, "~~~");
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if (a == 0) return 1;
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if (b == 0) return 1;
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return 0;
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}
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void extract(char *fname) {
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char *buffer = (char *)source;
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char fence[4];
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FILE *fp;
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int inBlock;
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inBlock = 0;
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fp = fopen(fname, "r");
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if (fp == NULL)
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return;
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while (!feof(fp)) {
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read_line(fp, buffer);
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strncpy(fence, buffer, 3);
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fence[3] = '\0';
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if (fenced(fence)) {
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if (inBlock == 0)
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inBlock = 1;
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else
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inBlock = 0;
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} else {
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if ((inBlock == 1) && (strlen(buffer) != 0))
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printf("%s\n", buffer);
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}
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}
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fclose(fp);
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}
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int main(int argc, char **argv) {
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int i = 1;
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if (argc > 1) {
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while (i < argc) {
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extract(argv[i++]);
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}
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}
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else
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printf("unu\n(c) 2013-2017 charles childers\n\nTry:\n %s filename\n", argv[0]);
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return 0;
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}
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