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Address first round of review for generic blocks

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This commit is contained in:
Brian Ashworth 2018-05-30 22:23:11 -04:00
parent 51bb9d8573
commit 8bfa2def88
10 changed files with 34 additions and 32 deletions
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19
common/readline.c
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@ -1,3 +1,4 @@
#define _POSIX_C_SOURCE 200809L
#include "readline.h"
#include "log.h"
#include <stdlib.h>
@ -48,15 +49,21 @@ char *read_line(FILE *file) {
return string;
}
char *peek_line(FILE *file, int offset) {
int pos = ftell(file);
char *line = NULL;
char *peek_line(FILE *file, int offset, long *position) {
long pos = ftell(file);
size_t length = 1;
char *line = calloc(1, length);
for (int i = 0; i <= offset; i++) {
free(line);
line = read_line(file);
if (!line) {
ssize_t read = getline(&line, &length, file);
if (read < 0) {
break;
}
if (line[read - 1] == '\n') {
line[read - 1] = '\0';
}
}
if (position) {
*position = ftell(file);
}
fseek(file, pos, SEEK_SET);
return line;