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/*
* Copyright (c) The FFmpeg developers
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <limits.h>
#include <stdarg.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include "avtextformat.h"
#include "libavutil/bprint.h"
#include "libavutil/opt.h"
#define writer_w8(wctx_, b_) (wctx_)->writer->writer->writer_w8((wctx_)->writer, b_)
#define writer_put_str(wctx_, str_) (wctx_)->writer->writer->writer_put_str((wctx_)->writer, str_)
#define writer_printf(wctx_, fmt_, ...) (wctx_)->writer->writer->writer_printf((wctx_)->writer, fmt_, __VA_ARGS__)
#define DEFINE_FORMATTER_CLASS(name) \
static const char *name##_get_name(void *ctx) \
{ \
return #name ; \
} \
static const AVClass name##_class = { \
.class_name = #name, \
.item_name = name##_get_name, \
.option = name##_options \
}
/* Default output */
typedef struct DefaultContext {
const AVClass *class;
int nokey;
int noprint_wrappers;
int nested_section[SECTION_MAX_NB_LEVELS];
} DefaultContext;
/* INI format output */
typedef struct INIContext {
const AVClass *class;
int hierarchical;
} INIContext;
#undef OFFSET
#define OFFSET(x) offsetof(INIContext, x)
static const AVOption ini_options[] = {
{"hierarchical", "specify if the section specification should be hierarchical", OFFSET(hierarchical), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1 },
{"h", "specify if the section specification should be hierarchical", OFFSET(hierarchical), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1 },
{NULL},
};
DEFINE_FORMATTER_CLASS(ini);
static char *ini_escape_str(AVBPrint *dst, const char *src)
{
int i = 0;
char c = 0;
while (c = src[i++]) {
switch (c) {
case '\b': av_bprintf(dst, "%s", "\\b"); break;
case '\f': av_bprintf(dst, "%s", "\\f"); break;
case '\n': av_bprintf(dst, "%s", "\\n"); break;
case '\r': av_bprintf(dst, "%s", "\\r"); break;
case '\t': av_bprintf(dst, "%s", "\\t"); break;
case '\\':
case '#' :
case '=' :
case ':' : av_bprint_chars(dst, '\\', 1);
default:
if ((unsigned char)c < 32)
av_bprintf(dst, "\\x00%02x", c & 0xff);
else
av_bprint_chars(dst, c, 1);
break;
}
}
return dst->str;
}
static void ini_print_section_header(AVTextFormatContext *wctx, const void *data)
{
INIContext *ini = wctx->priv;
AVBPrint *buf = &wctx->section_pbuf[wctx->level];
const struct AVTextFormatSection *section = wctx->section[wctx->level];
const struct AVTextFormatSection *parent_section = wctx->level ?
wctx->section[wctx->level-1] : NULL;
av_bprint_clear(buf);
if (!parent_section) {
writer_put_str(wctx, "# ffprobe output\n\n");
return;
}
if (wctx->nb_item[wctx->level-1])
writer_w8(wctx, '\n');
av_bprintf(buf, "%s", wctx->section_pbuf[wctx->level-1].str);
if (ini->hierarchical ||
!(section->flags & (AV_TEXTFORMAT_SECTION_FLAG_IS_ARRAY|AV_TEXTFORMAT_SECTION_FLAG_IS_WRAPPER))) {
av_bprintf(buf, "%s%s", buf->str[0] ? "." : "", wctx->section[wctx->level]->name);
if (parent_section->flags & AV_TEXTFORMAT_SECTION_FLAG_IS_ARRAY) {
int n = parent_section->flags & AV_TEXTFORMAT_SECTION_FLAG_NUMBERING_BY_TYPE ?
wctx->nb_item_type[wctx->level-1][section->id] :
wctx->nb_item[wctx->level-1];
av_bprintf(buf, ".%d", n);
}
}
if (!(section->flags & (AV_TEXTFORMAT_SECTION_FLAG_IS_ARRAY|AV_TEXTFORMAT_SECTION_FLAG_IS_WRAPPER)))
writer_printf(wctx, "[%s]\n", buf->str);
}
static void ini_print_str(AVTextFormatContext *wctx, const char *key, const char *value)
{
AVBPrint buf;
av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
writer_printf(wctx, "%s=", ini_escape_str(&buf, key));
av_bprint_clear(&buf);
writer_printf(wctx, "%s\n", ini_escape_str(&buf, value));
av_bprint_finalize(&buf, NULL);
}
static void ini_print_int(AVTextFormatContext *wctx, const char *key, int64_t value)
{
writer_printf(wctx, "%s=%"PRId64"\n", key, value);
}
const AVTextFormatter avtextformatter_ini = {
.name = "ini",
.priv_size = sizeof(INIContext),
.print_section_header = ini_print_section_header,
.print_integer = ini_print_int,
.print_string = ini_print_str,
.flags = AV_TEXTFORMAT_FLAG_SUPPORTS_OPTIONAL_FIELDS|AV_TEXTFORMAT_FLAG_SUPPORTS_MIXED_ARRAY_CONTENT,
.priv_class = &ini_class,
};
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