-
/*
* utils.c -- various utility routines
*
void *
mh_xmalloc(size_t size)
{
- void *memory;
+ void *memory;
- if (size == 0)
- adios(NULL, "Tried to malloc 0 bytes");
+ if (size == 0)
+ adios(NULL, "Tried to malloc 0 bytes");
- memory = malloc(size);
- if (!memory)
- adios(NULL, "Malloc failed");
+ memory = malloc(size);
+ if (!memory)
+ adios(NULL, "Malloc failed");
- return memory;
+ return memory;
}
/*
void *
mh_xrealloc(void *ptr, size_t size)
{
- void *memory;
+ void *memory;
- /* Some non-POSIX realloc()s don't cope with realloc(NULL,sz) */
- if (!ptr)
- return mh_xmalloc(size);
+ /* Some non-POSIX realloc()s don't cope with realloc(NULL,sz) */
+ if (!ptr)
+ return mh_xmalloc(size);
- if (size == 0)
- adios(NULL, "Tried to realloc 0bytes");
+ if (size == 0)
+ adios(NULL, "Tried to realloc 0bytes");
- memory = realloc(ptr, size);
- if (!memory)
- adios(NULL, "Realloc failed");
+ memory = realloc(ptr, size);
+ if (!memory)
+ adios(NULL, "Realloc failed");
- return memory;
+ return memory;
}
/*
char *
pwd(void)
{
- register char *cp;
- static char curwd[PATH_MAX];
-
- if (!getcwd (curwd, PATH_MAX)) {
- admonish (NULL, "unable to determine working directory");
- if (!mypath || !*mypath
- || (strcpy (curwd, mypath), chdir (curwd)) == -1) {
- strcpy (curwd, "/");
- chdir (curwd);
- }
- return curwd;
- }
-
- if ((cp = curwd + strlen (curwd) - 1) > curwd && *cp == '/')
- *cp = '\0';
-
- return curwd;
+ register char *cp;
+ static char curwd[PATH_MAX];
+
+ if (!getcwd (curwd, PATH_MAX)) {
+ admonish (NULL, "unable to determine working directory");
+ if (!mypath || !*mypath
+ || (strcpy (curwd, mypath), chdir (curwd)) == -1) {
+ strcpy (curwd, "/");
+ chdir (curwd);
+ }
+ return curwd;
+ }
+
+ if ((cp = curwd + strlen (curwd) - 1) > curwd && *cp == '/')
+ *cp = '\0';
+
+ return curwd;
}
/*
char *
add (char *s2, char *s1)
{
- char *cp;
- size_t len1 = 0, len2 = 0;
+ char *cp;
+ size_t len1 = 0, len2 = 0;
- if (s1)
- len1 = strlen (s1);
- if (s2)
- len2 = strlen (s2);
+ if (s1)
+ len1 = strlen (s1);
+ if (s2)
+ len2 = strlen (s2);
- cp = mh_xmalloc (len1 + len2 + 1);
+ cp = mh_xmalloc (len1 + len2 + 1);
- /* Copy s1 and free it */
- if (s1) {
- memcpy (cp, s1, len1);
- free (s1);
- }
+ /* Copy s1 and free it */
+ if (s1) {
+ memcpy (cp, s1, len1);
+ free (s1);
+ }
- /* Copy s2 */
- if (s2)
- memcpy (cp + len1, s2, len2);
+ /* Copy s2 */
+ if (s2)
+ memcpy (cp + len1, s2, len2);
- /* Now NULL terminate the string */
- cp[len1 + len2] = '\0';
+ /* Now NULL terminate the string */
+ cp[len1 + len2] = '\0';
- return cp;
+ return cp;
}
/*
* folder_exists
- * Check to see if a folder exists.
+ * Check to see if a folder exists.
*/
int folder_exists(char *folder)
{
- struct stat st;
- int exists = 0;
-
- if (stat (folder, &st) == -1) {
- /* The folder either doesn't exist, or we hit an error. Either way
- * return a failure.
- */
- exists = 0;
- } else {
- /* We can see a folder with the right name */
- exists = 1;
- }
-
- return exists;
+ struct stat st;
+ int exists = 0;
+
+ if (stat (folder, &st) == -1) {
+ /* The folder either doesn't exist, or we hit an error.
+ * Either way return a failure.
+ */
+ exists = 0;
+ } else {
+ /* We can see a folder with the right name */
+ exists = 1;
+ }
+
+ return exists;
}
/*
* create_folder
- * Check to see if a folder exists, if not, prompt the user to create
- * it.
+ * Check to see if a folder exists, if not, prompt the user to create it.
*/
void create_folder(char *folder, int autocreate, void (*done_callback)(int))
{
- struct stat st;
- extern int errno;
- char *cp;
-
- if (stat (folder, &st) == -1) {
- if (errno != ENOENT)
- adios (folder, "error on folder");
- if (autocreate == 0) {
- /* ask before creating folder */
- cp = concat ("Create folder \"", folder, "\"? ", NULL);
- if (!getanswer (cp))
- done_callback (1);
- free (cp);
- } else if (autocreate == -1) {
- /* do not create, so exit */
- done_callback (1);
- }
- if (!makedir (folder))
- adios (NULL, "unable to create folder %s", folder);
- }
+ struct stat st;
+ extern int errno;
+ char *cp;
+
+ if (stat (folder, &st) == -1) {
+ if (errno != ENOENT)
+ adios (folder, "error on folder");
+ if (autocreate == 0) {
+ /* ask before creating folder */
+ cp = concat ("Create folder \"", folder, "\"? ", NULL);
+ if (!getanswer (cp))
+ done_callback (1);
+ free (cp);
+ } else if (autocreate == -1) {
+ /* do not create, so exit */
+ done_callback (1);
+ }
+ if (!makedir (folder))
+ adios (NULL, "unable to create folder %s", folder);
+ }
}
/*
* num_digits
- * Return the number of digits in a nonnegative integer.
+ * Return the number of digits in a nonnegative integer.
*/
int
num_digits (int n)
{
- int ndigits = 0;
+ int ndigits = 0;
- /* Sanity check */
- if (n < 0)
- adios (NULL, "oops, num_digits called with negative value");
+ /* Sanity check */
+ if (n < 0)
+ adios (NULL, "oops, num_digits called with negative value");
- if (n == 0)
- return 1;
+ if (n == 0)
+ return 1;
- while (n) {
- n /= 10;
- ndigits++;
- }
+ while (n) {
+ n /= 10;
+ ndigits++;
+ }
- return ndigits;
+ return ndigits;
}
/*
projects / mmh / blobdiff