git/line-range.c

#include "git-compat-util.h"
#include "line-range.h"
#include "xdiff-interface.h"
#include "userdiff.h"

/*
 * Parse one item in the -L option
 *
 * 'begin' is applicable only to relative range anchors. Absolute anchors
 * ignore this value.
 *
 * When parsing "-L A,B", parse_loc() is called once for A and once for B.
 *
 * When parsing A, 'begin' must be a negative number, the absolute value of
 * which is the line at which relative start-of-range anchors should be
 * based. Beginning of file is represented by -1.
 *
 * When parsing B, 'begin' must be the positive line number immediately
 * following the line computed for 'A'.
 */
static const char *parse_loc(const char *spec, nth_line_fn_t nth_line,
			     void *data, long lines, long begin, long *ret)
{ … }

static int match_funcname(xdemitconf_t *xecfg, const char *bol, const char *eol)
{ … }

static const char *find_funcname_matching_regexp(xdemitconf_t *xecfg, const char *start,
						 regex_t *regexp)
{ … }

static const char *parse_range_funcname(
	const char *arg, nth_line_fn_t nth_line_cb,
	void *cb_data, long lines, long anchor, long *begin, long *end,
	const char *path, struct index_state *istate)
{ … }

int parse_range_arg(const char *arg, nth_line_fn_t nth_line_cb,
		    void *cb_data, long lines, long anchor,
		    long *begin, long *end,
		    const char *path, struct index_state *istate)
{ … }

const char *skip_range_arg(const char *arg, struct index_state *istate)
{ … }