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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-05 12:08:03 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-05 12:08:18 +0000 |
commit | 5da14042f70711ea5cf66e034699730335462f66 (patch) | |
tree | 0f6354ccac934ed87a2d555f45be4c831cf92f4a /src/fluent-bit/lib/onigmo/sample/listcap.c | |
parent | Releasing debian version 1.44.3-2. (diff) | |
download | netdata-5da14042f70711ea5cf66e034699730335462f66.tar.xz netdata-5da14042f70711ea5cf66e034699730335462f66.zip |
Merging upstream version 1.45.3+dfsg.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/fluent-bit/lib/onigmo/sample/listcap.c')
-rw-r--r-- | src/fluent-bit/lib/onigmo/sample/listcap.c | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/src/fluent-bit/lib/onigmo/sample/listcap.c b/src/fluent-bit/lib/onigmo/sample/listcap.c new file mode 100644 index 000000000..07b58b593 --- /dev/null +++ b/src/fluent-bit/lib/onigmo/sample/listcap.c @@ -0,0 +1,134 @@ +/* + * listcap.c + * + * capture history (?@...) sample. + */ +#include <stdio.h> +#include <string.h> +#include "onigmo.h" + +static int +node_callback(int group, OnigPosition beg, OnigPosition end, int level, + int at, void* arg) +{ + int i; + + if (at != ONIG_TRAVERSE_CALLBACK_AT_FIRST) + return -1; /* error */ + + /* indent */ + for (i = 0; i < level * 2; i++) + fputc(' ', stderr); + + fprintf(stderr, "%d: (%ld-%ld)\n", group, beg, end); + return 0; +} + +static int +node_callback_last(int group, OnigPosition beg, OnigPosition end, int level, + int at, void* arg) +{ + int i; + + if (at != ONIG_TRAVERSE_CALLBACK_AT_LAST) + return -1; /* error */ + + /* indent */ + for (i = 0; i < level * 2; i++) + fputc(' ', stderr); + + fprintf(stderr, "%d: (%ld-%ld)\n", group, beg, end); + return 0; +} + +extern int ex(unsigned char* str, unsigned char* pattern, + OnigSyntaxType* syntax) +{ + int r; + unsigned char *start, *range, *end; + regex_t* reg; + OnigErrorInfo einfo; + OnigRegion *region; + + r = onig_new(®, pattern, pattern + strlen((char* )pattern), + ONIG_OPTION_DEFAULT, ONIG_ENCODING_ASCII, syntax, &einfo); + if (r != ONIG_NORMAL) { + OnigUChar s[ONIG_MAX_ERROR_MESSAGE_LEN]; + onig_error_code_to_str(s, r, &einfo); + fprintf(stderr, "ERROR: %s\n", s); + return -1; + } + + fprintf(stderr, "number of captures: %d\n", onig_number_of_captures(reg)); + fprintf(stderr, "number of capture histories: %d\n", + onig_number_of_capture_histories(reg)); + + region = onig_region_new(); + + end = str + strlen((char* )str); + start = str; + range = end; + r = onig_search(reg, str, end, start, range, region, ONIG_OPTION_NONE); + if (r >= 0) { + int i; + + fprintf(stderr, "match at %d\n", r); + for (i = 0; i < region->num_regs; i++) { + fprintf(stderr, "%d: (%ld-%ld)\n", i, region->beg[i], region->end[i]); + } + fprintf(stderr, "\n"); + + r = onig_capture_tree_traverse(region, ONIG_TRAVERSE_CALLBACK_AT_FIRST, + node_callback, (void* )0); + fprintf(stderr, "\n"); + + r = onig_capture_tree_traverse(region, ONIG_TRAVERSE_CALLBACK_AT_LAST, + node_callback_last, (void* )0); + fprintf(stderr, "\n"); + } + else if (r == ONIG_MISMATCH) { + fprintf(stderr, "search fail\n"); + } + else { /* error */ + OnigUChar s[ONIG_MAX_ERROR_MESSAGE_LEN]; + onig_error_code_to_str(s, r); + return -1; + } + + onig_region_free(region, 1 /* 1:free self, 0:free contents only */); + onig_free(reg); + return 0; +} + + +extern int main(int argc, char* argv[]) +{ + int r = 0; + OnigSyntaxType syn; + + static UChar* str1 = (UChar* )"((())())"; + static UChar* pattern1 + = (UChar* )"\\g<p>(?@<p>\\(\\g<s>\\)){0}(?@<s>(?:\\g<p>)*|){0}"; + + static UChar* str2 = (UChar* )"x00x00x00"; + static UChar* pattern2 = (UChar* )"(?@x(?@\\d+))+"; + + static UChar* str3 = (UChar* )"0123"; + static UChar* pattern3 = (UChar* )"(?@.)(?@.)(?@.)(?@.)"; + + static UChar* str4 = (UChar* )"((abc)(abc))"; + static UChar* pattern4 = (UChar* )"\\((?@(?:[^(]|\\g<0>)*)\\)"; + + /* enable capture hostory */ + onig_copy_syntax(&syn, ONIG_SYNTAX_DEFAULT); + onig_set_syntax_op2(&syn, + onig_get_syntax_op2(&syn) | ONIG_SYN_OP2_ATMARK_CAPTURE_HISTORY); + + r |= ex(str1, pattern1, &syn); + r |= ex(str2, pattern2, &syn); + r |= ex(str3, pattern3, &syn); + r |= ex(str4, pattern4, &syn); + + onig_end(); + return r; +} |