mirror of https://github.com/pygos/pkg-utils.git
62 lines
900 B
C
62 lines
900 B
C
#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#include <stdio.h>
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#include <errno.h>
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#include "util/util.h"
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int foreach_line_in_file(const char *filename, void *usr, linecb_t fun)
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{
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FILE *f = fopen(filename, "r");
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char *line = NULL, *ptr;
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size_t n, lineno = 1;
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ssize_t ret;
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if (f == NULL) {
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perror(filename);
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return -1;
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}
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for (;;) {
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free(line);
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line = NULL;
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errno = 0;
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n = 0;
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ret = getline(&line, &n, f);
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if (ret < 0) {
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if (errno == 0) {
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ret = 0;
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break;
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}
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perror(filename);
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break;
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}
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for (ptr = line; isspace(*ptr); ++ptr)
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;
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if (ptr != line)
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memmove(line, ptr, strlen(ptr) + 1);
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ptr = line + strlen(line);
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while (ptr > line && isspace(ptr[-1]))
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--ptr;
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*ptr = '\0';
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if (*line == '\0')
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continue;
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if (fun(usr, filename, lineno++, line)) {
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ret = -1;
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break;
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}
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}
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free(line);
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fclose(f);
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return ret;
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}
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