mirror of
https://github.com/varun-r-mallya/sysprof.git
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03c6c57fab
This came from Builder, and it's nice to be able to use it statically from multiple libsysprof libraries.
95 lines
2.2 KiB
C
95 lines
2.2 KiB
C
/* line-reader-private.h
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*
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* Copyright 2015-2023 Christian Hergert <christian@hergert.me>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* SPDX-License-Identifier: GPL-3.0-or-later
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*/
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#pragma once
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#include <glib.h>
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#include <string.h>
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G_BEGIN_DECLS
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typedef struct _LineReader
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{
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char *contents;
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gsize length;
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gssize pos;
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} LineReader;
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static inline void
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line_reader_init (LineReader *reader,
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char *contents,
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gssize length)
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{
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g_assert (reader != NULL);
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if (length < 0)
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length = strlen (contents);
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if (contents != NULL)
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{
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reader->contents = contents;
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reader->length = length;
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reader->pos = 0;
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}
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else
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{
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reader->contents = NULL;
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reader->length = 0;
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reader->pos = 0;
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}
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}
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static inline char *
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line_reader_next (LineReader *reader,
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gsize *length)
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{
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char *ret = NULL;
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g_assert (reader != NULL);
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g_assert (length != NULL);
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if ((reader->contents == NULL) || (reader->pos >= reader->length))
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{
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*length = 0;
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return NULL;
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}
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ret = &reader->contents [reader->pos];
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for (; reader->pos < reader->length; reader->pos++)
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{
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if (reader->contents [reader->pos] == '\n')
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{
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*length = &reader->contents [reader->pos] - ret;
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/* Ingore the \r in \r\n if provided */
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if (*length > 0 && reader->pos > 0 && reader->contents [reader->pos - 1] == '\r')
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(*length)--;
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reader->pos++;
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return ret;
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}
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}
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*length = &reader->contents [reader->pos] - ret;
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return ret;
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}
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G_END_DECLS
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