--- /dev/null
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+
+#include "regexp.h"
+
+#if defined(GIT_REGEX_BUILTIN) || defined(GIT_REGEX_PCRE)
+
+int git_regexp_compile(git_regexp *r, const char *pattern, int flags)
+{
+ int erroffset, cflags = 0;
+ const char *error = NULL;
+
+ if (flags & GIT_REGEXP_ICASE)
+ cflags |= PCRE_CASELESS;
+
+ if ((*r = pcre_compile(pattern, cflags, &error, &erroffset, NULL)) == NULL) {
+ git_error_set_str(GIT_ERROR_REGEX, error);
+ return GIT_EINVALIDSPEC;
+ }
+
+ return 0;
+}
+
+void git_regexp_dispose(git_regexp *r)
+{
+ pcre_free(*r);
+ *r = NULL;
+}
+
+int git_regexp_match(const git_regexp *r, const char *string)
+{
+ int error;
+ if ((error = pcre_exec(*r, NULL, string, (int) strlen(string), 0, 0, NULL, 0)) < 0)
+ return (error == PCRE_ERROR_NOMATCH) ? GIT_ENOTFOUND : GIT_EINVALIDSPEC;
+ return 0;
+}
+
+int git_regexp_search(const git_regexp *r, const char *string, size_t nmatches, git_regmatch *matches)
+{
+ int static_ovec[9] = {0}, *ovec;
+ int error;
+ size_t i;
+
+ /* The ovec array always needs to be a multiple of three */
+ if (nmatches <= ARRAY_SIZE(static_ovec) / 3)
+ ovec = static_ovec;
+ else
+ ovec = git__calloc(nmatches * 3, sizeof(*ovec));
+ GIT_ERROR_CHECK_ALLOC(ovec);
+
+ if ((error = pcre_exec(*r, NULL, string, (int) strlen(string), 0, 0, ovec, (int) nmatches * 3)) < 0)
+ goto out;
+
+ if (error == 0)
+ error = (int) nmatches;
+
+ for (i = 0; i < (unsigned int) error; i++) {
+ matches[i].start = (ovec[i * 2] < 0) ? -1 : ovec[i * 2];
+ matches[i].end = (ovec[i * 2 + 1] < 0) ? -1 : ovec[i * 2 + 1];
+ }
+ for (i = (unsigned int) error; i < nmatches; i++)
+ matches[i].start = matches[i].end = -1;
+
+out:
+ if (nmatches > ARRAY_SIZE(static_ovec) / 3)
+ git__free(ovec);
+ if (error < 0)
+ return (error == PCRE_ERROR_NOMATCH) ? GIT_ENOTFOUND : GIT_EINVALIDSPEC;
+ return 0;
+}
+
+#elif defined(GIT_REGEX_PCRE2)
+
+int git_regexp_compile(git_regexp *r, const char *pattern, int flags)
+{
+ unsigned char errmsg[1024];
+ PCRE2_SIZE erroff;
+ int error, cflags = 0;
+
+ if (flags & GIT_REGEXP_ICASE)
+ cflags |= PCRE2_CASELESS;
+
+ if ((*r = pcre2_compile((const unsigned char *) pattern, PCRE2_ZERO_TERMINATED,
+ cflags, &error, &erroff, NULL)) == NULL) {
+ pcre2_get_error_message(error, errmsg, sizeof(errmsg));
+ git_error_set_str(GIT_ERROR_REGEX, (char *) errmsg);
+ return GIT_EINVALIDSPEC;
+ }
+
+ return 0;
+}
+
+void git_regexp_dispose(git_regexp *r)
+{
+ pcre2_code_free(*r);
+ *r = NULL;
+}
+
+int git_regexp_match(const git_regexp *r, const char *string)
+{
+ pcre2_match_data *data;
+ int error;
+
+ data = pcre2_match_data_create(1, NULL);
+ GIT_ERROR_CHECK_ALLOC(data);
+
+ if ((error = pcre2_match(*r, (const unsigned char *) string, strlen(string),
+ 0, 0, data, NULL)) < 0)
+ return (error == PCRE2_ERROR_NOMATCH) ? GIT_ENOTFOUND : GIT_EINVALIDSPEC;
+
+ pcre2_match_data_free(data);
+ return 0;
+}
+
+int git_regexp_search(const git_regexp *r, const char *string, size_t nmatches, git_regmatch *matches)
+{
+ pcre2_match_data *data = NULL;
+ PCRE2_SIZE *ovec;
+ int error;
+ size_t i;
+
+ if ((data = pcre2_match_data_create(nmatches, NULL)) == NULL) {
+ git_error_set_oom();
+ goto out;
+ }
+
+ if ((error = pcre2_match(*r, (const unsigned char *) string, strlen(string),
+ 0, 0, data, NULL)) < 0)
+ goto out;
+
+ if (error == 0 || (unsigned int) error > nmatches)
+ error = nmatches;
+ ovec = pcre2_get_ovector_pointer(data);
+
+ for (i = 0; i < (unsigned int) error; i++) {
+ matches[i].start = (ovec[i * 2] == PCRE2_UNSET) ? -1 : (ssize_t) ovec[i * 2];
+ matches[i].end = (ovec[i * 2 + 1] == PCRE2_UNSET) ? -1 : (ssize_t) ovec[i * 2 + 1];
+ }
+ for (i = (unsigned int) error; i < nmatches; i++)
+ matches[i].start = matches[i].end = -1;
+
+out:
+ pcre2_match_data_free(data);
+ if (error < 0)
+ return (error == PCRE2_ERROR_NOMATCH) ? GIT_ENOTFOUND : GIT_EINVALIDSPEC;
+ return 0;
+}
+
+#elif defined(GIT_REGEX_REGCOMP) || defined(GIT_REGEX_REGCOMP_L)
+
+#if defined(GIT_REGEX_REGCOMP_L)
+# include <xlocale.h>
+#endif
+
+int git_regexp_compile(git_regexp *r, const char *pattern, int flags)
+{
+ int cflags = REG_EXTENDED, error;
+ char errmsg[1024];
+
+ if (flags & GIT_REGEXP_ICASE)
+ cflags |= REG_ICASE;
+
+# if defined(GIT_REGEX_REGCOMP)
+ if ((error = regcomp(r, pattern, cflags)) != 0)
+# else
+ if ((error = regcomp_l(r, pattern, cflags, (locale_t) 0)) != 0)
+# endif
+ {
+ regerror(error, r, errmsg, sizeof(errmsg));
+ git_error_set_str(GIT_ERROR_REGEX, errmsg);
+ return GIT_EINVALIDSPEC;
+ }
+
+ return 0;
+}
+
+void git_regexp_dispose(git_regexp *r)
+{
+ regfree(r);
+}
+
+int git_regexp_match(const git_regexp *r, const char *string)
+{
+ int error;
+ if ((error = regexec(r, string, 0, NULL, 0)) != 0)
+ return (error == REG_NOMATCH) ? GIT_ENOTFOUND : GIT_EINVALIDSPEC;
+ return 0;
+}
+
+int git_regexp_search(const git_regexp *r, const char *string, size_t nmatches, git_regmatch *matches)
+{
+ regmatch_t static_m[3], *m;
+ int error;
+ size_t i;
+
+ if (nmatches <= ARRAY_SIZE(static_m))
+ m = static_m;
+ else
+ m = git__calloc(nmatches, sizeof(*m));
+
+ if ((error = regexec(r, string, nmatches, m, 0)) != 0)
+ goto out;
+
+ for (i = 0; i < nmatches; i++) {
+ matches[i].start = (m[i].rm_so < 0) ? -1 : m[i].rm_so;
+ matches[i].end = (m[i].rm_eo < 0) ? -1 : m[i].rm_eo;
+ }
+
+out:
+ if (nmatches > ARRAY_SIZE(static_m))
+ git__free(m);
+ if (error)
+ return (error == REG_NOMATCH) ? GIT_ENOTFOUND : GIT_EINVALIDSPEC;
+ return 0;
+}
+
+#endif
projects / libgit2.git / blobdiff