[fusl] clang-format fusl

fusl/src/string/memmem.c

 #define _GNU_SOURCE
 #include <string.h>
 #include <stdint.h>
 
-static char *twobyte_memmem(const unsigned char *h, size_t k, const unsigned char *n)
-{
-        uint16_t nw = n[0]<<8 | n[1], hw = h[0]<<8 | h[1];
-        for (h++, k--; k; k--, hw = hw<<8 | *++h)
-                if (hw == nw) return (char *)h-1;
-        return 0;
+static char* twobyte_memmem(const unsigned char* h,
+                            size_t k,
+                            const unsigned char* n) {
+  uint16_t nw = n[0] << 8 | n[1], hw = h[0] << 8 | h[1];
+  for (h++, k--; k; k--, hw = hw << 8 | *++h)
+    if (hw == nw)
+      return (char*)h - 1;
+  return 0;
 }
 
-static char *threebyte_memmem(const unsigned char *h, size_t k, const unsigned char *n)
-{
-        uint32_t nw = n[0]<<24 | n[1]<<16 | n[2]<<8;
-        uint32_t hw = h[0]<<24 | h[1]<<16 | h[2]<<8;
-        for (h+=2, k-=2; k; k--, hw = (hw|*++h)<<8)
-                if (hw == nw) return (char *)h-2;
-        return 0;
+static char* threebyte_memmem(const unsigned char* h,
+                              size_t k,
+                              const unsigned char* n) {
+  uint32_t nw = n[0] << 24 | n[1] << 16 | n[2] << 8;
+  uint32_t hw = h[0] << 24 | h[1] << 16 | h[2] << 8;
+  for (h += 2, k -= 2; k; k--, hw = (hw | *++h) << 8)
+    if (hw == nw)
+      return (char*)h - 2;
+  return 0;
 }
 
-static char *fourbyte_memmem(const unsigned char *h, size_t k, const unsigned char *n)
-{
-        uint32_t nw = n[0]<<24 | n[1]<<16 | n[2]<<8 | n[3];
-        uint32_t hw = h[0]<<24 | h[1]<<16 | h[2]<<8 | h[3];
-        for (h+=3, k-=3; k; k--, hw = hw<<8 | *++h)
-                if (hw == nw) return (char *)h-3;
-        return 0;
+static char* fourbyte_memmem(const unsigned char* h,
+                             size_t k,
+                             const unsigned char* n) {
+  uint32_t nw = n[0] << 24 | n[1] << 16 | n[2] << 8 | n[3];
+  uint32_t hw = h[0] << 24 | h[1] << 16 | h[2] << 8 | h[3];
+  for (h += 3, k -= 3; k; k--, hw = hw << 8 | *++h)
+    if (hw == nw)
+      return (char*)h - 3;
+  return 0;
 }
 
-#define MAX(a,b) ((a)>(b)?(a):(b))
-#define MIN(a,b) ((a)<(b)?(a):(b))
+#define MAX(a, b) ((a) > (b) ? (a) : (b))
+#define MIN(a, b) ((a) < (b) ? (a) : (b))
 
-#define BITOP(a,b,op) \
- ((a)[(size_t)(b)/(8*sizeof *(a))] op (size_t)1<<((size_t)(b)%(8*sizeof *(a))))
+#define BITOP(a, b, op)                              \
+  ((a)[(size_t)(b) / (8 * sizeof *(a))] op(size_t) 1 \
+   << ((size_t)(b) % (8 * sizeof *(a))))
 
-static char *twoway_memmem(const unsigned char *h, const unsigned char *z, const unsigned char *n, size_t l)
-{
-        size_t i, ip, jp, k, p, ms, p0, mem, mem0;
-        size_t byteset[32 / sizeof(size_t)] = { 0 };
-        size_t shift[256];
+static char* twoway_memmem(const unsigned char* h,
+                           const unsigned char* z,
+                           const unsigned char* n,
+                           size_t l) {
+  size_t i, ip, jp, k, p, ms, p0, mem, mem0;
+  size_t byteset[32 / sizeof(size_t)] = {0};
+  size_t shift[256];
 
-        /* Computing length of needle and fill shift table */
-        for (i=0; i<l; i++)
-                BITOP(byteset, n[i], |=), shift[n[i]] = i+1;
+  /* Computing length of needle and fill shift table */
+  for (i = 0; i < l; i++)
+    BITOP(byteset, n[i], |=), shift[n[i]] = i + 1;
 
-        /* Compute maximal suffix */
-        ip = -1; jp = 0; k = p = 1;
-        while (jp+k<l) {
-                if (n[ip+k] == n[jp+k]) {
-                        if (k == p) {
-                                jp += p;
-                                k = 1;
-                        } else k++;
-                } else if (n[ip+k] > n[jp+k]) {
-                        jp += k;
-                        k = 1;
-                        p = jp - ip;
-                } else {
-                        ip = jp++;
-                        k = p = 1;
-                }
-        }
-        ms = ip;
-        p0 = p;
+  /* Compute maximal suffix */
+  ip = -1;
+  jp = 0;
+  k = p = 1;
+  while (jp + k < l) {
+    if (n[ip + k] == n[jp + k]) {
+      if (k == p) {
+        jp += p;
+        k = 1;
+      } else
+        k++;
+    } else if (n[ip + k] > n[jp + k]) {
+      jp += k;
+      k = 1;
+      p = jp - ip;
+    } else {
+      ip = jp++;
+      k = p = 1;
+    }
+  }
+  ms = ip;
+  p0 = p;
 
-        /* And with the opposite comparison */
-        ip = -1; jp = 0; k = p = 1;
-        while (jp+k<l) {
-                if (n[ip+k] == n[jp+k]) {
-                        if (k == p) {
-                                jp += p;
-                                k = 1;
-                        } else k++;
-                } else if (n[ip+k] < n[jp+k]) {
-                        jp += k;
-                        k = 1;
-                        p = jp - ip;
-                } else {
-                        ip = jp++;
-                        k = p = 1;
-                }
-        }
-        if (ip+1 > ms+1) ms = ip;
-        else p = p0;
+  /* And with the opposite comparison */
+  ip = -1;
+  jp = 0;
+  k = p = 1;
+  while (jp + k < l) {
+    if (n[ip + k] == n[jp + k]) {
+      if (k == p) {
+        jp += p;
+        k = 1;
+      } else
+        k++;
+    } else if (n[ip + k] < n[jp + k]) {
+      jp += k;
+      k = 1;
+      p = jp - ip;
+    } else {
+      ip = jp++;
+      k = p = 1;
+    }
+  }
+  if (ip + 1 > ms + 1)
+    ms = ip;
+  else
+    p = p0;
 
-        /* Periodic needle? */
-        if (memcmp(n, n+p, ms+1)) {
-                mem0 = 0;
-                p = MAX(ms, l-ms-1) + 1;
-        } else mem0 = l-p;
-        mem = 0;
+  /* Periodic needle? */
+  if (memcmp(n, n + p, ms + 1)) {
+    mem0 = 0;
+    p = MAX(ms, l - ms - 1) + 1;
+  } else
+    mem0 = l - p;
+  mem = 0;
 
-        /* Search loop */
-        for (;;) {
-                /* If remainder of haystack is shorter than needle, done */
-                if (z-h < l) return 0;
+  /* Search loop */
+  for (;;) {
+    /* If remainder of haystack is shorter than needle, done */
+    if (z - h < l)
+      return 0;
 
-                /* Check last byte first; advance by shift on mismatch */
-                if (BITOP(byteset, h[l-1], &)) {
-                        k = l-shift[h[l-1]];
-                        if (k) {
-                                if (mem0 && mem && k < p) k = l-p;
-                                h += k;
-                                mem = 0;
-                                continue;
-                        }
-                } else {
-                        h += l;
-                        mem = 0;
-                        continue;
-                }
+    /* Check last byte first; advance by shift on mismatch */
+    if (BITOP(byteset, h[l - 1], &)) {
+      k = l - shift[h[l - 1]];
+      if (k) {
+        if (mem0 && mem && k < p)
+          k = l - p;
+        h += k;
+        mem = 0;
+        continue;
+      }
+    } else {
+      h += l;
+      mem = 0;
+      continue;
+    }
 
-                /* Compare right half */
-                for (k=MAX(ms+1,mem); k<l && n[k] == h[k]; k++);
-                if (k < l) {
-                        h += k-ms;
-                        mem = 0;
-                        continue;
-                }
-                /* Compare left half */
-                for (k=ms+1; k>mem && n[k-1] == h[k-1]; k--);
-                if (k <= mem) return (char *)h;
-                h += p;
-                mem = mem0;
-        }
+    /* Compare right half */
+    for (k = MAX(ms + 1, mem); k < l && n[k] == h[k]; k++)
+      ;
+    if (k < l) {
+      h += k - ms;
+      mem = 0;
+      continue;
+    }
+    /* Compare left half */
+    for (k = ms + 1; k > mem && n[k - 1] == h[k - 1]; k--)
+      ;
+    if (k <= mem)
+      return (char*)h;
+    h += p;
+    mem = mem0;
+  }
 }
 
-void *memmem(const void *h0, size_t k, const void *n0, size_t l)
-{
-        const unsigned char *h = h0, *n = n0;
+void* memmem(const void* h0, size_t k, const void* n0, size_t l) {
+  const unsigned char *h = h0, *n = n0;
 
-        /* Return immediately on empty needle */
-        if (!l) return (void *)h;
+  /* Return immediately on empty needle */
+  if (!l)
+    return (void*)h;
 
-        /* Return immediately when needle is longer than haystack */
-        if (k<l) return 0;
+  /* Return immediately when needle is longer than haystack */
+  if (k < l)
+    return 0;
 
-        /* Use faster algorithms for short needles */
-        h = memchr(h0, *n, k);
-        if (!h || l==1) return (void *)h;
-        k -= h - (const unsigned char *)h0;
-        if (l==2) return twobyte_memmem(h, k, n);
-        if (l==3) return threebyte_memmem(h, k, n);
-        if (l==4) return fourbyte_memmem(h, k, n);
+  /* Use faster algorithms for short needles */
+  h = memchr(h0, *n, k);
+  if (!h || l == 1)
+    return (void*)h;
+  k -= h - (const unsigned char*)h0;
+  if (l == 2)
+    return twobyte_memmem(h, k, n);
+  if (l == 3)
+    return threebyte_memmem(h, k, n);
+  if (l == 4)
+    return fourbyte_memmem(h, k, n);
 
-        return twoway_memmem(h, h+k, n, l);
+  return twoway_memmem(h, h + k, n, l);
 }