aheinecke@59: 
aheinecke@59: #include <stdio.h>
aheinecke@59: #include <stdlib.h>
aheinecke@59: #include <string.h>
aheinecke@59: #include <assert.h>
aheinecke@59: 
aheinecke@59: static void
aheinecke@59: out_of_core(void)
aheinecke@59: {
aheinecke@59:     fputs("\nfatal: out of memory\n", stderr);
aheinecke@59:     exit(2);
aheinecke@59: }
aheinecke@59: void *
aheinecke@59: xmalloc( size_t n )
aheinecke@59: {
aheinecke@59:     void *p = malloc( n );
aheinecke@59:     if( !p )
aheinecke@59:         out_of_core();
aheinecke@59:     return p;
aheinecke@59: }
aheinecke@59: 
aheinecke@59: void *
aheinecke@59: xrealloc( void *a, size_t n )
aheinecke@59: {
aheinecke@59:     void *p = realloc( a, n );
aheinecke@59:     if( !p )
aheinecke@59:         out_of_core();
aheinecke@59:     return p;
aheinecke@59: }
aheinecke@59: 
aheinecke@59: char *
aheinecke@60: xstrndup( const char *string, const size_t len )
aheinecke@59: {
aheinecke@60:     char *p = xmalloc( len + 1 );
aheinecke@60:     memcpy( p, string, len );
aheinecke@60:     p[len] = '\0';
aheinecke@59:     return p;
aheinecke@59: }
aheinecke@59: 
aheinecke@59: unsigned int
aheinecke@59: strv_length (char **str_array)
aheinecke@59: {
aheinecke@59:     unsigned int i = 0;
aheinecke@59: 
aheinecke@59:     if (!str_array)
aheinecke@59:         return 0;
aheinecke@59: 
aheinecke@59:     while (str_array[i])
aheinecke@59:         ++i;
aheinecke@59: 
aheinecke@59:     return i;
aheinecke@59: }
aheinecke@59: 
aheinecke@60: void array_append_str(char ***pArray, const char *string, const size_t len)
aheinecke@59: {
aheinecke@60:     unsigned int old_len = 0;
aheinecke@60: 
aheinecke@60:     if (!*pArray) {
aheinecke@60:         *pArray = xmalloc(2 * sizeof(char*));
aheinecke@60:         (*pArray)[0] = xstrndup(string, len);
aheinecke@60:         (*pArray)[1] = NULL;
aheinecke@60:         return;
aheinecke@60:     }
aheinecke@60:     old_len = strv_length(*pArray);
aheinecke@59:     *pArray = xrealloc(*pArray, sizeof(char**) * (old_len + 2));
aheinecke@59: 
aheinecke@60:     (*pArray)[old_len] = xstrndup(string, len);
aheinecke@60:     (*pArray)[old_len + 1] = NULL;
aheinecke@59: }
aheinecke@59: 
aheinecke@60: void str_append_str(char **pDst, const char *appendage, const size_t len)
aheinecke@59: {
aheinecke@59:     if (!appendage)
aheinecke@59:         return;
aheinecke@59: 
aheinecke@60:     if (!*pDst) {
aheinecke@60:         *pDst = xstrndup(appendage, len);
aheinecke@60:     } else {
aheinecke@60:         size_t old_len = strlen(*pDst);
aheinecke@60:         size_t new_len = old_len + len + 1;
aheinecke@60:         *pDst = (char *)xrealloc(*pDst, sizeof(char) * (new_len));
aheinecke@60:         strncpy(*pDst + old_len, appendage, new_len);
aheinecke@60:         *pDst[new_len] = '\0';
aheinecke@60:     }
aheinecke@59: }
aheinecke@59: 
aheinecke@59: void
aheinecke@59: strfreev (char **str_array)
aheinecke@59: {
aheinecke@59:   if (str_array)
aheinecke@59:     {
aheinecke@59:       int i;
aheinecke@59: 
aheinecke@59:       for (i = 0; str_array[i] != NULL; i++)
aheinecke@59:         free (str_array[i]);
aheinecke@59: 
aheinecke@59:       free (str_array);
aheinecke@59:     }
aheinecke@59: }