diff options
| author | Stefano Sabatini <stefasab@gmail.com> | 2020-11-16 09:38:39 +0200 |
|---|---|---|
| committer | Jan Ekström <jeebjp@gmail.com> | 2021-03-05 19:45:00 +0200 |
| commit | 0f6bf94eb71c2d5e996c89c290f1a53660c46c2e (patch) | |
| tree | 6786c1885eba8746deceeac4a6ff1816072b735e /libavutil/bprint.c | |
| parent | a272f382d3eb143e9da99537aec25dbbe5778614 (diff) | |
avutil/{avstring,bprint}: add XML escaping from ffprobe to avutil
Base escaping only escapes values required for base character data
according to part 2.4 of XML, and if additional flags are added
single and double quotes can additionally be escaped in order
to handle single and double quoted attributes.
Co-authored-by: Jan Ekström <jan.ekstrom@24i.com>
Signed-off-by: Jan Ekström <jan.ekstrom@24i.com>
Diffstat (limited to 'libavutil/bprint.c')
| -rw-r--r-- | libavutil/bprint.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/libavutil/bprint.c b/libavutil/bprint.c index 2f059c5ba6..e12fb263fe 100644 --- a/libavutil/bprint.c +++ b/libavutil/bprint.c @@ -283,6 +283,35 @@ void av_bprint_escape(AVBPrint *dstbuf, const char *src, const char *special_cha av_bprint_chars(dstbuf, '\'', 1); break; + case AV_ESCAPE_MODE_XML: + /* escape XML non-markup character data as per 2.4 by default: */ + /* [^<&]* - ([^<&]* ']]>' [^<&]*) */ + + /* additionally, given one of the AV_ESCAPE_FLAG_XML_* flags, */ + /* escape those specific characters as required. */ + for (; *src; src++) { + switch (*src) { + case '&' : av_bprintf(dstbuf, "%s", "&"); break; + case '<' : av_bprintf(dstbuf, "%s", "<"); break; + case '>' : av_bprintf(dstbuf, "%s", ">"); break; + case '\'': + if (!(flags & AV_ESCAPE_FLAG_XML_SINGLE_QUOTES)) + goto XML_DEFAULT_HANDLING; + + av_bprintf(dstbuf, "%s", "'"); + break; + case '"' : + if (!(flags & AV_ESCAPE_FLAG_XML_DOUBLE_QUOTES)) + goto XML_DEFAULT_HANDLING; + + av_bprintf(dstbuf, "%s", """); + break; +XML_DEFAULT_HANDLING: + default: av_bprint_chars(dstbuf, *src, 1); + } + } + break; + /* case AV_ESCAPE_MODE_BACKSLASH or unknown mode */ default: /* \-escape characters */ |