[PATCH 1/2] cgit.c: Use "else" for mutually exclusive branches

[PATCH 1/2] cgit.c: Use "else" for mutually exclusive branches

[cgit]

When parsing command line arguments, no pair of command line options can
ever match simultaneously. Use "else if" blocks to reflect this. This
change improves both readability and speed.

Signed-off-by: Lukas Fleischer <cgit at cryptocrack.de>
---
Based on the patches I sent earlier today.

 cgit.c | 29 ++++++++++-------------------
 1 file changed, 10 insertions(+), 19 deletions(-)

diff --git a/cgit.c b/cgit.c
index e31962d..f4262d8 100644
--- a/cgit.c
+++ b/cgit.c
@@ -865,35 +865,26 @@ static void cgit_parse_args(int argc, const char **argv)
 	for (i = 1; i < argc; i++) {
 		if (!prefixcmp(argv[i], "--cache=")) {
 			ctx.cfg.cache_root = xstrdup(argv[i] + 8);
-		}
-		if (!strcmp(argv[i], "--nocache")) {
+		} else if (!strcmp(argv[i], "--nocache")) {
 			ctx.cfg.nocache = 1;
-		}
-		if (!strcmp(argv[i], "--nohttp")) {
+		} else if (!strcmp(argv[i], "--nohttp")) {
 			ctx.env.no_http = "1";
-		}
-		if (!prefixcmp(argv[i], "--query=")) {
+		} else if (!prefixcmp(argv[i], "--query=")) {
 			ctx.qry.raw = xstrdup(argv[i] + 8);
-		}
-		if (!prefixcmp(argv[i], "--repo=")) {
+		} else if (!prefixcmp(argv[i], "--repo=")) {
 			ctx.qry.repo = xstrdup(argv[i] + 7);
-		}
-		if (!prefixcmp(argv[i], "--page=")) {
+		} else if (!prefixcmp(argv[i], "--page=")) {
 			ctx.qry.page = xstrdup(argv[i] + 7);
-		}
-		if (!prefixcmp(argv[i], "--head=")) {
+		} else if (!prefixcmp(argv[i], "--head=")) {
 			ctx.qry.head = xstrdup(argv[i] + 7);
 			ctx.qry.has_symref = 1;
-		}
-		if (!prefixcmp(argv[i], "--sha1=")) {
+		} else if (!prefixcmp(argv[i], "--sha1=")) {
 			ctx.qry.sha1 = xstrdup(argv[i] + 7);
 			ctx.qry.has_sha1 = 1;
-		}
-		if (!prefixcmp(argv[i], "--ofs=")) {
+		} else if (!prefixcmp(argv[i], "--ofs=")) {
 			ctx.qry.ofs = atoi(argv[i] + 6);
-		}
-		if (!prefixcmp(argv[i], "--scan-tree=") ||
-		    !prefixcmp(argv[i], "--scan-path=")) {
+		} else if (!prefixcmp(argv[i], "--scan-tree=") ||
+		           !prefixcmp(argv[i], "--scan-path=")) {
 			/* HACK: the global snapshot bitmask defines the
 			 * set of allowed snapshot formats, but the config
 			 * file hasn't been parsed yet so the mask is
-- 
1.8.5.2

[PATCH 2/2] cgit.c: Fix comment on bit mask hack

[cgit]

* Formatting and spelling fixes.

* A bit mask with the size of one byte only allows for storing 8 (not
  255!) different flags.

Signed-off-by: Lukas Fleischer <cgit at cryptocrack.de>
---
 cgit.c | 18 ++++++++++--------
 1 file changed, 10 insertions(+), 8 deletions(-)

diff --git a/cgit.c b/cgit.c
index f4262d8..d74b0f3 100644
--- a/cgit.c
+++ b/cgit.c
@@ -885,14 +885,16 @@ static void cgit_parse_args(int argc, const char **argv)
 			ctx.qry.ofs = atoi(argv[i] + 6);
 		} else if (!prefixcmp(argv[i], "--scan-tree=") ||
 		           !prefixcmp(argv[i], "--scan-path=")) {
-			/* HACK: the global snapshot bitmask defines the
-			 * set of allowed snapshot formats, but the config
-			 * file hasn't been parsed yet so the mask is
-			 * currently 0. By setting all bits high before
-			 * scanning we make sure that any in-repo cgitrc
-			 * snapshot setting is respected by scan_tree().
-			 * BTW: we assume that there'll never be more than
-			 * 255 different snapshot formats supported by cgit...
+			/*
+			 * HACK: The global snapshot bit mask defines the set
+			 * of allowed snapshot formats, but the config file
+			 * hasn't been parsed yet so the mask is currently 0.
+			 * By setting all bits high before scanning we make
+			 * sure that any in-repo cgitrc snapshot setting is
+			 * respected by scan_tree().
+			 *
+			 * NOTE: We assume that there aren't more than 8
+			 * different snapshot formats supported by cgit...
 			 */
 			ctx.cfg.snapshots = 0xFF;
 			scan++;
-- 
1.8.5.2

[PATCH 1/2] cgit.c: Use "else" for mutually exclusive branches

[Jason]

Seems reasonable. Merged.

[PATCH 2/2] cgit.c: Fix comment on bit mask hack

[Jason]

On Fri, Jan 10, 2014 at 2:55 PM, Lukas Fleischer <cgit at cryptocrack.de> wrote:
> * A bit mask with the size of one byte only allows for storing 8 (not
>   255!) different flags.

Haha. Merged, thanks.