Update xx.c style

1 files changed, 18 insertions, 22 deletions

diff --git a/.bin/xx.c b/.bin/xx.c
index 00b55391..9ffd0b9b 100755
--- a/.bin/xx.c
+++ b/.bin/xx.c
@@ -1,5 +1,5 @@
 #if 0
-exec clang -Weverything -Wno-vla $@ -o $(dirname $0)/xx $0
+exec cc -Wall -Wextra -pedantic $@ -o $(dirname $0)/xx $0
 #endif
 
 #include <ctype.h>
@@ -11,7 +11,7 @@ exec clang -Weverything -Wno-vla $@ -o $(dirname $0)/xx $0
 #include <sysexits.h>
 #include <unistd.h>
 
-static bool zero(const uint8_t *buf, size_t len) {
+static bool allZero(const uint8_t *buf, size_t len) {
     for (size_t i = 0; i < len; ++i)
         if (buf[i]) return false;
     return true;
@@ -23,7 +23,7 @@ enum {
     FLAG_SKIP = 4,
 };
 
-int main(int argc, char **argv) {
+int main(int argc, char *argv[]) {
     size_t cols = 16;
     size_t group = 8;
     uint8_t flags = FLAG_ASCII | FLAG_OFFSET;
@@ -31,19 +31,15 @@ int main(int argc, char **argv) {
 
     int opt;
     while ((opt = getopt(argc, argv, "ac:fg:hk")) > 0) {
-        if (opt == 'a')
-            flags ^= FLAG_ASCII;
-        else if (opt == 'c')
-            cols = strtoul(optarg, NULL, 10);
-        else if (opt == 'f')
-            flags ^= FLAG_OFFSET;
-        else if (opt == 'g')
-            group = strtoul(optarg, NULL, 10);
-        else if (opt == 'k')
-            flags ^= FLAG_SKIP;
-        else {
-            fprintf(stderr, "usage: xx [-afk] [-c N] [-g N] [FILE]\n");
-            return (opt == 'h') ? EX_OK : EX_USAGE;
+        switch (opt) {
+            case 'a': flags ^= FLAG_ASCII; break;
+            case 'f': flags ^= FLAG_OFFSET; break;
+            case 'k': flags ^= FLAG_SKIP; break;
+            case 'c': cols = strtoul(optarg, NULL, 10); break;
+            case 'g': group = strtoul(optarg, NULL, 10); break;
+            default:
+                fprintf(stderr, "usage: xx [-afk] [-c cols] [-g group] [file]\n");
+                return (opt == 'h') ? EX_OK : EX_USAGE;
         }
     }
     if (!cols) return EX_USAGE;
@@ -54,15 +50,15 @@ int main(int argc, char **argv) {
     if (!file) err(EX_NOINPUT, "%s", path);
 
     uint8_t buf[cols];
-    size_t offset = 0, len = 0, i;
+    size_t offset = 0, len = 0;
     for (;;) {
         offset += len;
         len = fread(buf, 1, sizeof(buf), file);
         if (!len) break;
 
         if ((flags & FLAG_SKIP) && len == sizeof(buf)) {
-            static bool skip = false;
-            if (zero(buf, len)) {
+            static bool skip;
+            if (allZero(buf, len)) {
                 if (!skip) printf("*\n");
                 skip = true;
                 continue;
@@ -73,16 +69,16 @@ int main(int argc, char **argv) {
         if (flags & FLAG_OFFSET)
             printf("%08zx:  ", offset);
 
-        for (i = 0; i < len; ++i) {
+        for (size_t i = 0; i < len; ++i) {
             if (group && i && !(i % group)) printf(" ");
             printf("%02x ", buf[i]);
         }
 
         if (flags & FLAG_ASCII) {
-            for (i = len; i < cols; ++i)
+            for (size_t i = len; i < cols; ++i)
                 printf((group && !(i % group)) ? "    " : "   ");
             printf(" ");
-            for (i = 0; i < len; ++i)
+            for (size_t i = 0; i < len; ++i)
                 printf("%c", isprint(buf[i]) ? buf[i] : '.');
         }