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author | Max Kellermann <max@duempel.org> | 2013-01-03 10:12:41 +0100 |
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committer | Max Kellermann <max@duempel.org> | 2013-01-03 10:12:41 +0100 |
commit | 2452447c814048ed72e95a459c76b4be65962b5c (patch) | |
tree | 187241e9a958aa9ac80f2488d7aa7e8add1ca74f /src/TextFile.cxx | |
parent | 93f0bb8307ea26cc9ef96cf368110e8f6f0caead (diff) | |
download | mpd-2452447c814048ed72e95a459c76b4be65962b5c.tar.gz mpd-2452447c814048ed72e95a459c76b4be65962b5c.tar.xz mpd-2452447c814048ed72e95a459c76b4be65962b5c.zip |
text_file: convert to C++
Diffstat (limited to 'src/TextFile.cxx')
-rw-r--r-- | src/TextFile.cxx | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/src/TextFile.cxx b/src/TextFile.cxx new file mode 100644 index 000000000..ec9c5d442 --- /dev/null +++ b/src/TextFile.cxx @@ -0,0 +1,68 @@ +/* + * Copyright (C) 2003-2013 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include "config.h" +#include "TextFile.hxx" + +#include <assert.h> +#include <string.h> + +char * +read_text_line(FILE *file, GString *buffer) +{ + enum { + max_length = 512 * 1024, + step = 1024, + }; + + gsize length = 0, i; + char *p; + + assert(file != NULL); + assert(buffer != NULL); + + if (buffer->allocated_len < step) + g_string_set_size(buffer, step); + + while (buffer->len < max_length) { + p = fgets(buffer->str + length, + buffer->allocated_len - length, file); + if (p == NULL) { + if (length == 0 || ferror(file)) + return NULL; + break; + } + + i = strlen(buffer->str + length); + length += i; + if (i < step - 1 || buffer->str[length - 1] == '\n') + break; + + g_string_set_size(buffer, length + step); + } + + /* remove the newline characters */ + if (buffer->str[length - 1] == '\n') + --length; + if (buffer->str[length - 1] == '\r') + --length; + + g_string_set_size(buffer, length); + return buffer->str; +} |