111 lines
2.6 KiB
C
111 lines
2.6 KiB
C
/* retro-unu.c
|
|
|
|
This is a tool to extract code blocks from a RETRO-flavored
|
|
Markdown source file.
|
|
|
|
Code blocks start and end with ~~~ and test blocks start
|
|
and end with ```, though this does support setting them
|
|
from the command line.
|
|
|
|
Copyright (c) 2017-2020 Charles Childers
|
|
*/
|
|
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <stdint.h>
|
|
#include <string.h>
|
|
|
|
char code_start[33], code_end[33], test_start[33], test_end[33];
|
|
|
|
typedef void (*Handler)(char *);
|
|
|
|
void read_line(FILE *file, char *line_buffer) {
|
|
int ch = getc(file);
|
|
int count = 0;
|
|
while ((ch != '\n') && (ch != EOF)) {
|
|
line_buffer[count] = ch;
|
|
count++;
|
|
ch = getc(file);
|
|
}
|
|
line_buffer[count] = '\0';
|
|
}
|
|
|
|
int fence_boundary(char *buffer, int tests_enabled) {
|
|
int flag = 1;
|
|
if (strcmp(buffer, code_start) == 0) { flag = -1; }
|
|
if (strcmp(buffer, code_end) == 0) { flag = -1; }
|
|
if (tests_enabled == 0) { return flag; }
|
|
if (strcmp(buffer, test_start) == 0) { flag = -1; }
|
|
if (strcmp(buffer, test_end) == 0) { flag = -1; }
|
|
return flag;
|
|
}
|
|
|
|
void unu(char *fname, int tests_enabled, Handler handler) {
|
|
int inBlock = 0;
|
|
char buffer[4096];
|
|
FILE *fp;
|
|
fp = fopen(fname, "r");
|
|
if (fp == NULL) {
|
|
printf("Unable to load file\n");
|
|
exit(2);
|
|
}
|
|
while (!feof(fp)) {
|
|
read_line(fp, buffer);
|
|
if (fence_boundary(buffer, tests_enabled) == -1) {
|
|
if (inBlock == 0) {
|
|
inBlock = 1;
|
|
} else {
|
|
inBlock = 0;
|
|
}
|
|
} else {
|
|
if (inBlock == 1) {
|
|
handler(buffer);
|
|
}
|
|
}
|
|
}
|
|
fclose(fp);
|
|
}
|
|
|
|
void display(char *buffer) {
|
|
printf("%s\n", buffer);
|
|
}
|
|
|
|
int arg_is(char *arg, char *value) {
|
|
return (strcmp(arg, value) == 0);
|
|
}
|
|
|
|
int main(int argc, char **argv) {
|
|
int tests = 0;
|
|
int i = 1;
|
|
strcpy(code_start, "~~~");
|
|
strcpy(code_end, "~~~");
|
|
strcpy(test_start, "```");
|
|
strcpy(test_end, "```");
|
|
if (argc > 1) {
|
|
while (i < argc) {
|
|
if (arg_is(argv[i], "--code-start") || arg_is(argv[i], "-cs")) {
|
|
i++;
|
|
strcpy(code_start, argv[i]);
|
|
} else if (arg_is(argv[i], "--code-end") || arg_is(argv[i], "-ce")) {
|
|
i++;
|
|
strcpy(code_end, argv[i]);
|
|
} else if (arg_is(argv[i], "--test-start") || arg_is(argv[i], "-ts")) {
|
|
i++;
|
|
strcpy(test_start, argv[i]);
|
|
} else if (arg_is(argv[i], "--test-end") || arg_is(argv[i], "-te")) {
|
|
i++;
|
|
strcpy(test_end, argv[i]);
|
|
} else if (arg_is(argv[i], "--include-tests") || arg_is(argv[i], "-t")) {
|
|
tests = -1;
|
|
} else {
|
|
unu(argv[i], tests, &display);
|
|
}
|
|
i++;
|
|
}
|
|
}
|
|
else {
|
|
printf("err: no file specified\n");
|
|
}
|
|
return 0;
|
|
}
|