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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 16:14:06 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 16:14:06 +0000
commiteee068778cb28ecf3c14e1bf843a95547d72c42d (patch)
tree0e07b30ddc5ea579d682d5dbe57998200d1c9ab7 /regexp/jimregexp.h
parentInitial commit. (diff)
downloadgnupg2-eee068778cb28ecf3c14e1bf843a95547d72c42d.tar.xz
gnupg2-eee068778cb28ecf3c14e1bf843a95547d72c42d.zip
Adding upstream version 2.2.40.upstream/2.2.40
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'regexp/jimregexp.h')
-rw-r--r--regexp/jimregexp.h110
1 files changed, 110 insertions, 0 deletions
diff --git a/regexp/jimregexp.h b/regexp/jimregexp.h
new file mode 100644
index 0000000..ab73479
--- /dev/null
+++ b/regexp/jimregexp.h
@@ -0,0 +1,110 @@
+#ifndef JIMREGEXP_H
+#define JIMREGEXP_H
+
+/** regexp(3)-compatible regular expression implementation for Jim.
+ *
+ * See jimregexp.c for details
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdlib.h>
+
+typedef struct {
+ int rm_so;
+ int rm_eo;
+} regmatch_t;
+
+/*
+ * The "internal use only" fields in regexp.h are present to pass info from
+ * compile to execute that permits the execute phase to run lots faster on
+ * simple cases. They are:
+ *
+ * regstart char that must begin a match; '\0' if none obvious
+ * reganch is the match anchored (at beginning-of-line only)?
+ * regmust string (pointer into program) that match must include, or NULL
+ * regmlen length of regmust string
+ *
+ * Regstart and reganch permit very fast decisions on suitable starting points
+ * for a match, cutting down the work a lot. Regmust permits fast rejection
+ * of lines that cannot possibly match. The regmust tests are costly enough
+ * that regcomp() supplies a regmust only if the r.e. contains something
+ * potentially expensive (at present, the only such thing detected is * or +
+ * at the start of the r.e., which can involve a lot of backup). Regmlen is
+ * supplied because the test in regexec() needs it and regcomp() is computing
+ * it anyway.
+ */
+
+struct regexp {
+ /* -- public -- */
+ int re_nsub; /* number of parenthesized subexpressions */
+
+ /* -- private -- */
+ int cflags; /* Flags used when compiling */
+ int err; /* Any error which occurred during compile */
+ int regstart; /* Internal use only. */
+ int reganch; /* Internal use only. */
+ int regmust; /* Internal use only. */
+ int regmlen; /* Internal use only. */
+ int *program; /* Allocated */
+
+ /* working state - compile */
+ const char *regparse; /* Input-scan pointer. */
+ int p; /* Current output pos in program */
+ int proglen; /* Allocated program size */
+
+ /* working state - exec */
+ int eflags; /* Flags used when executing */
+ const char *start; /* Initial string pointer. */
+ const char *reginput; /* Current input pointer. */
+ const char *regbol; /* Beginning of input, for ^ check. */
+
+ /* Input to regexec() */
+ regmatch_t *pmatch; /* submatches will be stored here */
+ int nmatch; /* size of pmatch[] */
+};
+
+typedef struct regexp regex_t;
+
+#define REG_EXTENDED 0
+#define REG_NEWLINE 1
+#define REG_ICASE 2
+
+#define REG_NOTBOL 16
+
+enum {
+ REG_NOERROR, /* Success. */
+ REG_NOMATCH, /* Didn't find a match (for regexec). */
+ REG_BADPAT, /* >= REG_BADPAT is an error */
+ REG_ERR_NULL_ARGUMENT,
+ REG_ERR_UNKNOWN,
+ REG_ERR_TOO_BIG,
+ REG_ERR_NOMEM,
+ REG_ERR_TOO_MANY_PAREN,
+ REG_ERR_UNMATCHED_PAREN,
+ REG_ERR_UNMATCHED_BRACES,
+ REG_ERR_BAD_COUNT,
+ REG_ERR_JUNK_ON_END,
+ REG_ERR_OPERAND_COULD_BE_EMPTY,
+ REG_ERR_NESTED_COUNT,
+ REG_ERR_INTERNAL,
+ REG_ERR_COUNT_FOLLOWS_NOTHING,
+ REG_ERR_INVALID_ESCAPE,
+ REG_ERR_CORRUPTED,
+ REG_ERR_NULL_CHAR,
+ REG_ERR_UNMATCHED_BRACKET,
+ REG_ERR_NUM
+};
+
+int regcomp(regex_t *preg, const char *regex, int cflags);
+int regexec(regex_t *preg, const char *string, size_t nmatch, regmatch_t pmatch[], int eflags);
+size_t regerror(int errcode, const regex_t *preg, char *errbuf, size_t errbuf_size);
+void regfree(regex_t *preg);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif