New upstream version 3.0.3upstream/3.0.3

1 files changed, 263 insertions, 0 deletions

diff --git a/XUtils.c b/XUtils.c
new file mode 100644
index 0000000..cd5edb9
--- /dev/null
+++ b/XUtils.c
@@ -0,0 +1,263 @@
+/*
+htop - StringUtils.c
+(C) 2004-2011 Hisham H. Muhammad
+Released under the GNU GPLv2, see the COPYING file
+in the source distribution for its full text.
+*/
+
+#include "config.h" // IWYU pragma: keep
+
+#include "XUtils.h"
+
+#include <assert.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "CRT.h"
+
+
+void fail() {
+   CRT_done();
+   abort();
+
+   _exit(1); // Should never reach here
+}
+
+void* xMalloc(size_t size) {
+   assert(size > 0);
+   void* data = malloc(size);
+   if (!data) {
+      fail();
+   }
+   return data;
+}
+
+void* xCalloc(size_t nmemb, size_t size) {
+   assert(nmemb > 0);
+   assert(size > 0);
+   void* data = calloc(nmemb, size);
+   if (!data) {
+      fail();
+   }
+   return data;
+}
+
+void* xRealloc(void* ptr, size_t size) {
+   assert(size > 0);
+   void* data = realloc(ptr, size); // deepcode ignore MemoryLeakOnRealloc: this goes to fail()
+   if (!data) {
+      free(ptr);
+      fail();
+   }
+   return data;
+}
+
+char* String_cat(const char* s1, const char* s2) {
+   const size_t l1 = strlen(s1);
+   const size_t l2 = strlen(s2);
+   char* out = xMalloc(l1 + l2 + 1);
+   memcpy(out, s1, l1);
+   memcpy(out + l1, s2, l2);
+   out[l1 + l2] = '\0';
+   return out;
+}
+
+char* String_trim(const char* in) {
+   while (in[0] == ' ' || in[0] == '\t' || in[0] == '\n') {
+      in++;
+   }
+
+   size_t len = strlen(in);
+   while (len > 0 && (in[len - 1] == ' ' || in[len - 1] == '\t' || in[len - 1] == '\n')) {
+      len--;
+   }
+
+   return xStrndup(in, len);
+}
+
+char** String_split(const char* s, char sep, size_t* n) {
+   const unsigned int rate = 10;
+   char** out = xCalloc(rate, sizeof(char*));
+   size_t ctr = 0;
+   unsigned int blocks = rate;
+   const char* where;
+   while ((where = strchr(s, sep)) != NULL) {
+      size_t size = (size_t)(where - s);
+      out[ctr] = xStrndup(s, size);
+      ctr++;
+      if (ctr == blocks) {
+         blocks += rate;
+         out = (char**) xRealloc(out, sizeof(char*) * blocks);
+      }
+      s += size + 1;
+   }
+   if (s[0] != '\0') {
+      out[ctr] = xStrdup(s);
+      ctr++;
+   }
+   out = xRealloc(out, sizeof(char*) * (ctr + 1));
+   out[ctr] = NULL;
+
+   if (n)
+      *n = ctr;
+
+   return out;
+}
+
+void String_freeArray(char** s) {
+   if (!s) {
+      return;
+   }
+   for (size_t i = 0; s[i] != NULL; i++) {
+      free(s[i]);
+   }
+   free(s);
+}
+
+char* String_getToken(const char* line, const unsigned short int numMatch) {
+   const size_t len = strlen(line);
+   char inWord = 0;
+   unsigned short int count = 0;
+   char match[50];
+
+   size_t foundCount = 0;
+
+   for (size_t i = 0; i < len; i++) {
+      char lastState = inWord;
+      inWord = line[i] == ' ' ? 0 : 1;
+
+      if (lastState == 0 && inWord == 1)
+         count++;
+
+      if (inWord == 1) {
+         if (count == numMatch && line[i] != ' ' && line[i] != '\0' && line[i] != '\n' && line[i] != (char)EOF) {
+            match[foundCount] = line[i];
+            foundCount++;
+         }
+      }
+   }
+
+   match[foundCount] = '\0';
+   return xStrdup(match);
+}
+
+char* String_readLine(FILE* fd) {
+   const unsigned int step = 1024;
+   unsigned int bufSize = step;
+   char* buffer = xMalloc(step + 1);
+   char* at = buffer;
+   for (;;) {
+      char* ok = fgets(at, step + 1, fd);
+      if (!ok) {
+         free(buffer);
+         return NULL;
+      }
+      char* newLine = strrchr(at, '\n');
+      if (newLine) {
+         *newLine = '\0';
+         return buffer;
+      } else {
+         if (feof(fd)) {
+            return buffer;
+         }
+      }
+      bufSize += step;
+      buffer = xRealloc(buffer, bufSize + 1);
+      at = buffer + bufSize - step;
+   }
+}
+
+int xAsprintf(char** strp, const char* fmt, ...) {
+   va_list vl;
+   va_start(vl, fmt);
+   int r = vasprintf(strp, fmt, vl);
+   va_end(vl);
+
+   if (r < 0 || !*strp) {
+      fail();
+   }
+
+   return r;
+}
+
+int xSnprintf(char* buf, size_t len, const char* fmt, ...) {
+   va_list vl;
+   va_start(vl, fmt);
+   int n = vsnprintf(buf, len, fmt, vl);
+   va_end(vl);
+
+   if (n < 0 || (size_t)n >= len) {
+      fail();
+   }
+
+   return n;
+}
+
+char* xStrdup(const char* str) {
+   char* data = strdup(str);
+   if (!data) {
+      fail();
+   }
+   return data;
+}
+
+char* xStrndup(const char* str, size_t len) {
+   char* data = strndup(str, len);
+   if (!data) {
+      fail();
+   }
+   return data;
+}
+
+static ssize_t readfd_internal(int fd, void* buffer, size_t count) {
+   if (!count) {
+      close(fd);
+      return -EINVAL;
+   }
+
+   ssize_t alreadyRead = 0;
+   count--; // reserve one for null-terminator
+
+   for (;;) {
+      ssize_t res = read(fd, buffer, count);
+      if (res == -1) {
+         if (errno == EINTR)
+            continue;
+
+         close(fd);
+         return -errno;
+      }
+
+      if (res > 0) {
+         buffer = ((char*)buffer) + res;
+         count -= (size_t)res;
+         alreadyRead += res;
+      }
+
+      if (count == 0 || res == 0) {
+         close(fd);
+         *((char*)buffer) = '\0';
+         return alreadyRead;
+      }
+   }
+}
+
+ssize_t xReadfile(const char* pathname, void* buffer, size_t count) {
+   int fd = open(pathname, O_RDONLY);
+   if (fd < 0)
+      return -errno;
+
+   return readfd_internal(fd, buffer, count);
+}
+
+ssize_t xReadfileat(openat_arg_t dirfd, const char* pathname, void* buffer, size_t count) {
+   int fd = Compat_openat(dirfd, pathname, O_RDONLY);
+   if (fd < 0)
+      return -errno;
+
+   return readfd_internal(fd, buffer, count);
+}