diff options
Diffstat (limited to 'grep.h')
| -rw-r--r-- | grep.h | 188 |
1 files changed, 188 insertions, 0 deletions
@@ -0,0 +1,188 @@ +#ifndef GREP_H +#define GREP_H +#include "color.h" +#ifdef USE_LIBPCRE +#include <pcre.h> +#else +typedef int pcre; +typedef int pcre_extra; +#endif +#include "kwset.h" +#include "thread-utils.h" +#include "userdiff.h" + +enum grep_pat_token { + GREP_PATTERN, + GREP_PATTERN_HEAD, + GREP_PATTERN_BODY, + GREP_AND, + GREP_OPEN_PAREN, + GREP_CLOSE_PAREN, + GREP_NOT, + GREP_OR +}; + +enum grep_context { + GREP_CONTEXT_HEAD, + GREP_CONTEXT_BODY +}; + +enum grep_header_field { + GREP_HEADER_AUTHOR = 0, + GREP_HEADER_COMMITTER +}; +#define GREP_HEADER_FIELD_MAX (GREP_HEADER_COMMITTER + 1) + +struct grep_pat { + struct grep_pat *next; + const char *origin; + int no; + enum grep_pat_token token; + const char *pattern; + size_t patternlen; + enum grep_header_field field; + regex_t regexp; + pcre *pcre_regexp; + pcre_extra *pcre_extra_info; + kwset_t kws; + unsigned fixed:1; + unsigned ignore_case:1; + unsigned word_regexp:1; +}; + +enum grep_expr_node { + GREP_NODE_ATOM, + GREP_NODE_NOT, + GREP_NODE_AND, + GREP_NODE_TRUE, + GREP_NODE_OR +}; + +struct grep_expr { + enum grep_expr_node node; + unsigned hit; + union { + struct grep_pat *atom; + struct grep_expr *unary; + struct { + struct grep_expr *left; + struct grep_expr *right; + } binary; + } u; +}; + +struct grep_opt { + struct grep_pat *pattern_list; + struct grep_pat **pattern_tail; + struct grep_pat *header_list; + struct grep_pat **header_tail; + struct grep_expr *pattern_expression; + const char *prefix; + int prefix_length; + regex_t regexp; + int linenum; + int invert; + int ignore_case; + int status_only; + int name_only; + int unmatch_name_only; + int count; + int word_regexp; + int fixed; + int all_match; +#define GREP_BINARY_DEFAULT 0 +#define GREP_BINARY_NOMATCH 1 +#define GREP_BINARY_TEXT 2 + int binary; + int extended; + int pcre; + int relative; + int pathname; + int null_following_name; + int color; + int max_depth; + int funcname; + int funcbody; + char color_context[COLOR_MAXLEN]; + char color_filename[COLOR_MAXLEN]; + char color_function[COLOR_MAXLEN]; + char color_lineno[COLOR_MAXLEN]; + char color_match[COLOR_MAXLEN]; + char color_selected[COLOR_MAXLEN]; + char color_sep[COLOR_MAXLEN]; + int regflags; + unsigned pre_context; + unsigned post_context; + unsigned last_shown; + int show_hunk_mark; + int file_break; + int heading; + void *priv; + + void (*output)(struct grep_opt *opt, const void *data, size_t size); + void *output_priv; +}; + +extern void append_grep_pat(struct grep_opt *opt, const char *pat, size_t patlen, const char *origin, int no, enum grep_pat_token t); +extern void append_grep_pattern(struct grep_opt *opt, const char *pat, const char *origin, int no, enum grep_pat_token t); +extern void append_header_grep_pattern(struct grep_opt *, enum grep_header_field, const char *); +extern void compile_grep_patterns(struct grep_opt *opt); +extern void free_grep_patterns(struct grep_opt *opt); +extern int grep_buffer(struct grep_opt *opt, char *buf, unsigned long size); + +struct grep_source { + char *name; + + enum grep_source_type { + GREP_SOURCE_SHA1, + GREP_SOURCE_FILE, + GREP_SOURCE_BUF, + } type; + void *identifier; + + char *buf; + unsigned long size; + + struct userdiff_driver *driver; +}; + +void grep_source_init(struct grep_source *gs, enum grep_source_type type, + const char *name, const void *identifier); +int grep_source_load(struct grep_source *gs); +void grep_source_clear_data(struct grep_source *gs); +void grep_source_clear(struct grep_source *gs); +void grep_source_load_driver(struct grep_source *gs); +int grep_source_is_binary(struct grep_source *gs); + +int grep_source(struct grep_opt *opt, struct grep_source *gs); + +extern struct grep_opt *grep_opt_dup(const struct grep_opt *opt); +extern int grep_threads_ok(const struct grep_opt *opt); + +#ifndef NO_PTHREADS +/* + * Mutex used around access to the attributes machinery if + * opt->use_threads. Must be initialized/destroyed by callers! + */ +extern int grep_use_locks; +extern pthread_mutex_t grep_attr_mutex; +extern pthread_mutex_t grep_read_mutex; + +static inline void grep_read_lock(void) +{ + if (grep_use_locks) + pthread_mutex_lock(&grep_read_mutex); +} + +static inline void grep_read_unlock(void) +{ + if (grep_use_locks) + pthread_mutex_unlock(&grep_read_mutex); +} + +#else +#define grep_read_lock() +#define grep_read_unlock() +#endif + +#endif |