[PATCH 14/20] diff-parseopt: convert --inter-hunk-context

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Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@xxxxxxxxx>
---
 diff.c          | 50 +++----------------------------------------------
 parse-options.h |  3 ++-
 2 files changed, 5 insertions(+), 48 deletions(-)

diff --git a/diff.c b/diff.c
index 045fdbb882..e2f515a7da 100644
--- a/diff.c
+++ b/diff.c
@@ -4573,50 +4573,6 @@ void diff_setup_done(struct diff_options *options)
 	FREE_AND_NULL(options->parseopts);
 }
 
-static int opt_arg(const char *arg, int arg_short, const char *arg_long, int *val)
-{
-	char c, *eq;
-	int len;
-
-	if (*arg != '-')
-		return 0;
-	c = *++arg;
-	if (!c)
-		return 0;
-	if (c == arg_short) {
-		c = *++arg;
-		if (!c)
-			return 1;
-		if (val && isdigit(c)) {
-			char *end;
-			int n = strtoul(arg, &end, 10);
-			if (*end)
-				return 0;
-			*val = n;
-			return 1;
-		}
-		return 0;
-	}
-	if (c != '-')
-		return 0;
-	arg++;
-	eq = strchrnul(arg, '=');
-	len = eq - arg;
-	if (!len || strncmp(arg, arg_long, len))
-		return 0;
-	if (*eq) {
-		int n;
-		char *end;
-		if (!isdigit(*++eq))
-			return 0;
-		n = strtoul(eq, &end, 10);
-		if (*end)
-			return 0;
-		*val = n;
-	}
-	return 1;
-}
-
 int parse_long_opt(const char *opt, const char **argv,
 		   const char **optarg)
 {
@@ -5291,6 +5247,9 @@ static void prep_parse_options(struct diff_options *options)
 		OPT_CALLBACK_F(0, "no-prefix", options, NULL,
 			       N_("no not show any source or destination prefix"),
 			       PARSE_OPT_NONEG | PARSE_OPT_NOARG, diff_opt_no_prefix),
+		OPT_INTEGER_F(0, "inter-hunk-context", &options->interhunkcontext,
+			      N_("show context between diff hunks up to the specified number of lines"),
+			      PARSE_OPT_NONEG),
 		OPT_CALLBACK_F(0, "output-indicator-new",
 			       &options->output_indicators[OUTPUT_INDICATOR_NEW],
 			       N_("<char>"),
@@ -5483,9 +5442,6 @@ int diff_opt_parse(struct diff_options *options,
 	}
 
 	/* misc options */
-	else if (opt_arg(arg, '\0', "inter-hunk-context",
-			 &options->interhunkcontext))
-		;
 	else
 		return 0;
 	return 1;
diff --git a/parse-options.h b/parse-options.h
index c95cbe26f0..cca64d04cb 100644
--- a/parse-options.h
+++ b/parse-options.h
@@ -137,6 +137,7 @@ struct option {
 #define OPT_CALLBACK_F(s, l, v, a, h, f, cb)			\
 	{ OPTION_CALLBACK, (s), (l), (v), (a), (h), (f), (cb) }
 #define OPT_STRING_F(s, l, v, a, h, f)   { OPTION_STRING,  (s), (l), (v), (a), (h), (f) }
+#define OPT_INTEGER_F(s, l, v, h, f)     { OPTION_INTEGER, (s), (l), (v), N_("n"), (h), (f) }
 
 #define OPT_END()                   { OPTION_END }
 #define OPT_ARGUMENT(l, h)          { OPTION_ARGUMENT, 0, (l), NULL, NULL, \
@@ -155,7 +156,7 @@ struct option {
 				      (h), PARSE_OPT_NOARG | PARSE_OPT_HIDDEN, NULL, 1}
 #define OPT_CMDMODE(s, l, v, h, i)  { OPTION_CMDMODE, (s), (l), (v), NULL, \
 				      (h), PARSE_OPT_NOARG|PARSE_OPT_NONEG, NULL, (i) }
-#define OPT_INTEGER(s, l, v, h)     { OPTION_INTEGER, (s), (l), (v), N_("n"), (h) }
+#define OPT_INTEGER(s, l, v, h)     OPT_INTEGER_F(s, l, v, h, 0)
 #define OPT_MAGNITUDE(s, l, v, h)   { OPTION_MAGNITUDE, (s), (l), (v), \
 				      N_("n"), (h), PARSE_OPT_NONEG }
 #define OPT_STRING(s, l, v, a, h)   OPT_STRING_F(s, l, v, a, h, 0)
-- 
2.21.0.548.gd3c7d92dc2




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