diff options
Diffstat (limited to 'lib/fstream/get_line.c')
-rw-r--r-- | lib/fstream/get_line.c | 118 |
1 files changed, 0 insertions, 118 deletions
diff --git a/lib/fstream/get_line.c b/lib/fstream/get_line.c deleted file mode 100644 index f7e0b59..0000000 --- a/lib/fstream/get_line.c +++ /dev/null @@ -1,118 +0,0 @@ -/* SPDX-License-Identifier: GPL-3.0-or-later */ -/* - * get_line.c - * - * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at> - */ -#include "internal.h" - -static void ltrim(char *buffer) -{ - size_t i = 0; - - while (isspace(buffer[i])) - ++i; - - if (i > 0) - memmove(buffer, buffer + i, strlen(buffer + i) + 1); -} - -static void rtrim(char *buffer) -{ - size_t i = strlen(buffer); - - while (i > 0 && isspace(buffer[i - 1])) - --i; - - buffer[i] = '\0'; -} - -static size_t trim(char *buffer, int flags) -{ - if (flags & ISTREAM_LINE_LTRIM) - ltrim(buffer); - - if (flags & ISTREAM_LINE_RTRIM) - rtrim(buffer); - - return strlen(buffer); -} - -int istream_get_line(istream_t *strm, char **out, - size_t *line_num, int flags) -{ - char *line = NULL, *new; - size_t i, line_len = 0; - bool have_line = false; - - *out = NULL; - - for (;;) { - if (istream_precache(strm)) - return -1; - - if (strm->buffer_used == 0) { - if (line_len == 0) - goto out_eof; - - line_len = trim(line, flags); - - if (line_len == 0 && - (flags & ISTREAM_LINE_SKIP_EMPTY)) { - goto out_eof; - } - break; - } - - for (i = 0; i < strm->buffer_used; ++i) { - if (strm->buffer[i] == '\n') - break; - } - - if (i < strm->buffer_used) { - have_line = true; - strm->buffer_offset = i + 1; - - if (i > 0 && strm->buffer[i - 1] == '\r') - --i; - } else { - strm->buffer_offset = i; - } - - new = realloc(line, line_len + i + 1); - if (new == NULL) - goto fail_errno; - - line = new; - memcpy(line + line_len, strm->buffer, i); - line_len += i; - line[line_len] = '\0'; - - if (have_line) { - line_len = trim(line, flags); - - if (line_len == 0 && - (flags & ISTREAM_LINE_SKIP_EMPTY)) { - free(line); - line = NULL; - have_line = false; - *line_num += 1; - continue; - } - break; - } - } - - *out = line; - return 0; -fail_errno: - fprintf(stderr, "%s: " PRI_SZ ": %s.\n", strm->get_filename(strm), - *line_num, strerror(errno)); - free(line); - *out = NULL; - return -1; -out_eof: - free(line); - *out = NULL; - return 1; -} |