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0573f16693
Add a BUF_INIT macro, which makes it easier to initialize a struct buf to an empty string (without a heap allocation). Add buf_move() to move the contents of one struct buf to another (the source is reset to BUF_INIT, analogous to C++ move-assignment). Use buf_reset() instead of directly calling `free(s->buf)` since the internal buf may not always be allocated by malloc() now.
36 lines
629 B
C
36 lines
629 B
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Read file into memory
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*
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* Copyright Johan Malm 2020
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*/
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#define _POSIX_C_SOURCE 200809L
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#include "common/grab-file.h"
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#include "common/buf.h"
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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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struct buf
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grab_file(const char *filename)
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{
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char *line = NULL;
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size_t len = 0;
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FILE *stream = fopen(filename, "r");
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if (!stream) {
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return BUF_INIT;
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}
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struct buf buffer = BUF_INIT;
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while ((getline(&line, &len, stream) != -1)) {
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char *p = strrchr(line, '\n');
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if (p) {
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*p = '\0';
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}
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buf_add(&buffer, line);
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}
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free(line);
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fclose(stream);
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return buffer;
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}
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