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ffprobe: generalize nesting model for the compact writer

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Regular section fields nested in a regular section are now prefixed by
the nested section name.

This is required by the pending change related to disposition.
This commit is contained in:
Stefano Sabatini 2012-09-26 15:39:12 +02:00
parent 44c1cc3f8e
commit 06fd4c2dfa
1 changed files with 31 additions and 11 deletions
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42
ffprobe.c
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@ -661,6 +661,8 @@ typedef struct CompactContext {
int print_section;
char *escape_mode_str;
const char * (*escape_str)(AVBPrint *dst, const char *src, const char sep, void *log_ctx);
int nested_section[SECTION_MAX_NB_LEVELS];
AVBPrint prefix[SECTION_MAX_NB_LEVELS];
} CompactContext;
#undef OFFSET
@ -683,6 +685,7 @@ DEFINE_WRITER_CLASS(compact);
static av_cold int compact_init(WriterContext *wctx)
{
CompactContext *compact = wctx->priv;
int i;
if (strlen(compact->item_sep_str) != 1) {
av_log(wctx, AV_LOG_ERROR, "Item separator '%s' specified, but must contain a single character\n",
@ -699,44 +702,60 @@ static av_cold int compact_init(WriterContext *wctx)
return AVERROR(EINVAL);
}
for (i = 0; i < SECTION_MAX_NB_LEVELS; i++)
av_bprint_init(&compact->prefix[i], 1, AV_BPRINT_SIZE_UNLIMITED);
return 0;
}
static void compact_uninit(WriterContext *wctx)
{
CompactContext *compact = wctx->priv;
int i;
for (i = 0; i < SECTION_MAX_NB_LEVELS; i++)
av_bprint_finalize(&compact->prefix[i], NULL);
}
static void compact_print_section_header(WriterContext *wctx)
{
CompactContext *compact = wctx->priv;
const struct section *section = wctx->section[wctx->level];
const struct section *parent_section = wctx->level ?
wctx->section[wctx->level-1] : NULL;
if (!strcmp(section->name, "tags"))
av_bprint_clear(&compact->prefix[wctx->level]);
if (parent_section &&
!(parent_section->flags & (SECTION_FLAG_IS_WRAPPER|SECTION_FLAG_IS_ARRAY))) {
compact->nested_section[wctx->level] = 1;
av_bprintf(&compact->prefix[wctx->level], "%s%s:",
compact->prefix[wctx->level-1].str,
(char *)av_x_if_null(section->element_name, section->name));
wctx->nb_item[wctx->level] = wctx->nb_item[wctx->level-1];
else if (compact->print_section &&
} else if (compact->print_section &&
!(section->flags & (SECTION_FLAG_IS_WRAPPER|SECTION_FLAG_IS_ARRAY)))
printf("%s%c", section->name, compact->item_sep);
printf("%s%c", section->name, compact->item_sep);
}
static void compact_print_section_footer(WriterContext *wctx)
{
const struct section *section = wctx->section[wctx->level];
CompactContext *compact = wctx->priv;
if (strcmp(section->name, "tags") &&
!(section->flags & (SECTION_FLAG_IS_WRAPPER|SECTION_FLAG_IS_ARRAY)))
if (!compact->nested_section[wctx->level] &&
!(wctx->section[wctx->level]->flags & (SECTION_FLAG_IS_WRAPPER|SECTION_FLAG_IS_ARRAY)))
printf("\n");
}
static void compact_print_str(WriterContext *wctx, const char *key, const char *value)
{
CompactContext *compact = wctx->priv;
const struct section *section = wctx->section[wctx->level];
const char *key_prefix = !strcmp(section->name, "tags") ? "tag:" : "";
AVBPrint buf;
if (wctx->nb_item[wctx->level]) printf("%c", compact->item_sep);
if (!compact->nokey)
printf("%s%s=", key_prefix, key);
printf("%s%s=", compact->prefix[wctx->level].str, key);
av_bprint_init(&buf, 1, AV_BPRINT_SIZE_UNLIMITED);
printf("%s", compact->escape_str(&buf, value, compact->item_sep, wctx));
av_bprint_finalize(&buf, NULL);
}
static void compact_print_int(WriterContext *wctx, const char *key, long long int value)
@ -745,7 +764,7 @@ static void compact_print_int(WriterContext *wctx, const char *key, long long in
if (wctx->nb_item[wctx->level]) printf("%c", compact->item_sep);
if (!compact->nokey)
printf("%s=", key);
printf("%s%s=", compact->prefix[wctx->level].str, key);
printf("%lld", value);
}
@ -753,6 +772,7 @@ static const Writer compact_writer = {
.name = "compact",
.priv_size = sizeof(CompactContext),
.init = compact_init,
.uninit = compact_uninit,
.print_section_header = compact_print_section_header,
.print_section_footer = compact_print_section_footer,
.print_integer = compact_print_int,