Rejoice! Windows now uses a safer popen() which returns 0 on program launch fail, and allows you to see stdout on initial usages.

zsnes/src/argv.h

@@ -0,0 +1,152 @@
+#ifndef ARGV_H
+#define ARGV_H
+
+static char *decode_string(char *str)
+{
+  size_t str_len = strlen(str), i = 0;
+  char *dest = str;
+
+  if ((str_len > 1) && ((*str == '\"') || (*str == '\'')) && (str[str_len-1] == *str))
+  {
+    memmove(str, str+1, str_len-2);
+    str[str_len-2] = 0;
+  }
+
+  while (*str)
+  {
+    if (*str == '\\')
+    {
+      str++;
+    }
+    dest[i++] = *str++;
+  }
+  dest[i] = 0;
+  return(dest);
+}
+
+static char *find_next_match(char *str, char match_char)
+{
+  char *pos = 0;
+
+  while (*str)
+  {
+    if (*str == match_char)
+    {
+      pos = str;
+      break;
+    }
+    if (*str == '\\')
+    {
+      if (str[1])
+      {
+        str++;
+      }
+      else
+      {
+        break;
+      }
+    }
+    str++;
+  }
+  return(pos);
+}
+
+static char *get_param(char *str)
+{
+  static char *pos = 0;
+  char *token = 0;
+
+  if (str) //Start a new string?
+  {
+    pos = str;
+  }
+
+  if (pos)
+  {
+    //Skip delimiters
+    while (*pos == ' ') { pos++; }
+    if (*pos)
+    {
+      token = pos;
+
+      //Skip non-delimiters
+      while (*pos && (*pos != ' '))
+      {
+        //Skip quoted characters
+        if ((*pos == '\"') || (*pos == '\''))
+        {
+          char *match_pos = 0;
+          if ((match_pos = find_next_match(pos+1, *pos)))
+          {
+            pos = match_pos;
+          }
+        }
+        //Skip escaped spaces
+        if (*pos == '\\') { pos++; }
+        pos++;
+      }
+      if (*pos) { *pos++ = '\0'; }
+    }
+  }
+  return(token);
+}
+
+static size_t count_param(char *str)
+{
+  size_t i = 0;
+
+  while (*str)
+  {
+    //Skip delimiters
+    while (*str == ' ') { str++; }
+    //Skip non-delimiters
+    while (*str && (*str != ' '))
+    {
+      //Skip quoted characters
+      if ((*str == '\"') || (*str == '\''))
+      {
+        char *match_str = 0;
+        if ((match_str = find_next_match(str+1, *str)))
+        {
+          str = match_str;
+        }
+      }
+      //Skip escaped spaces
+      if (*str == '\\') { str++; }
+      str++;
+    }
+    i++;
+  }
+  return(i);
+}
+
+static char **build_argv(char *str)
+{
+  size_t argc = count_param(str);
+  char **argv = (char **)malloc(sizeof(char *)*(argc+1));
+
+  if (argv)
+  {
+    char *p, **argp = argv;
+    for (p = get_param(str); p; p = get_param(0), argp++)
+    {
+      *argp = decode_string(p);
+    }
+    *argp = 0;
+    return(argv);
+  }
+  return(0);
+}
+
+static void argv_print(char **argv)
+{
+  char **argp = argv;
+  while (*argp)
+  {
+    printf("argv[%u]: %s\n", argp-argv, *argp);
+    argp++;
+  }
+  printf("argv[%u]: NULL\n", argp-argv);
+}
+
+#endif