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MINOR: sample: add ltrim converter

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This converter strips specified characters from the beginning of a string.
This commit is contained in:
Christopher Faulet 2020-04-01 17:24:41 +02:00
parent ea159d6130
commit 51fc9d1bf1
2 changed files with 26 additions and 0 deletions
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4
doc/configuration.txt
View File

@ -14249,6 +14249,10 @@ ltime(<format>[,<offset>])
# e.g. 20140710162350 127.0.0.1:57325
log-format %[date,ltime(%Y%m%d%H%M%S)]\ %ci:%cp
ltrim(<chars>)
Skips any characters from <chars> from the beginning of the string
representation of the input sample.
map(<map_file>[,<default_value>])
map_<match_type>(<map_file>[,<default_value>])
map_<match_type>_<output_type>(<map_file>[,<default_value>])

22
src/sample.c
View File

@ -2994,6 +2994,27 @@ static int sample_conv_cut_crlf(const struct arg *arg_p, struct sample *smp, voi
return 1;
}
/**/
static int sample_conv_ltrim(const struct arg *arg_p, struct sample *smp, void *private)
{
char *delimiters, *p;
size_t dlen, l;
delimiters = arg_p[0].data.str.area;
dlen = arg_p[0].data.str.data;
l = smp->data.u.str.data;
p = smp->data.u.str.area;
while (l && memchr(delimiters, *p, dlen) != NULL) {
p++;
l--;
}
smp->data.u.str.area = p;
smp->data.u.str.data = l;
return 1;
}
/************************************************************************/
/* All supported sample fetch functions must be declared here */
/************************************************************************/
@ -3464,6 +3485,7 @@ static struct sample_conv_kw_list sample_conv_kws = {ILH, {
{ "htonl", sample_conv_htonl, 0, NULL, SMP_T_SINT, SMP_T_BIN },
{ "cut_crlf", sample_conv_cut_crlf, 0, NULL, SMP_T_STR, SMP_T_STR },
{ "ltrim", sample_conv_ltrim, ARG1(1,STR), NULL, SMP_T_STR, SMP_T_STR },
{ NULL, NULL, 0, 0, 0 },
}};