*/
#define MAXMSGS 256
-/*
- * Safely call malloc
- */
-void *
-mh_xmalloc(size_t size)
+/* Call malloc(3), exiting on NULL return. */
+void *mh_xmalloc(size_t size)
{
- void *memory;
+ void *p;
if (size == 0)
- adios(NULL, "Tried to malloc 0 bytes");
-
- memory = malloc(size);
- if (!memory)
- adios(NULL, "Malloc failed");
+ size = 1; /* Some mallocs don't like 0. */
+ p = malloc(size);
+ if (!p)
+ adios(NULL, "malloc failed, size wanted: %zu", size);
- return memory;
+ return p;
}
-/*
- * Safely call realloc
- */
-void *
-mh_xrealloc(void *ptr, size_t size)
+/* Call realloc(3), exiting on NULL return. */
+void *mh_xrealloc(void *ptr, size_t size)
{
- void *memory;
+ void *new;
- /* Some non-POSIX realloc()s don't cope with realloc(NULL,sz) */
+ /* Copy POSIX behaviour, coping with non-POSIX systems. */
+ if (size == 0) {
+ mh_xfree(ptr);
+ return mh_xmalloc(1); /* Get a unique pointer. */
+ }
if (!ptr)
return mh_xmalloc(size);
- if (size == 0)
- adios(NULL, "Tried to realloc 0bytes");
+ new = realloc(ptr, size);
+ if (!new)
+ adios(NULL, "realloc failed, size wanted: %zu", size);
+
+ return new;
+}
+
+/* Call calloc(3), exiting on NULL return. */
+void *mh_xcalloc(size_t nelem, size_t elsize)
+{
+ void *p;
+
+ if (!nelem || !elsize)
+ return mh_xmalloc(1); /* Get a unique pointer. */
- memory = realloc(ptr, size);
- if (!memory)
- adios(NULL, "Realloc failed");
+ p = calloc(nelem, elsize);
+ if (!p)
+ adios(NULL, "calloc failed, size wanted: %zu * %zu", nelem, elsize);
- return memory;
+ return p;
}
-/*
- * Safely call calloc
- */
-void *
-mh_xcalloc(size_t nmemb, size_t size)
+/* Duplicate a NUL-terminated string, exit on failure. */
+char *mh_xstrdup(const char *src)
{
- void *memory;
+ size_t n;
+ char *dest;
- if (nmemb == 0 || size == 0)
- adios(NULL, "Tried to calloc 0 bytes");
+ n = strlen(src) + 1; /* Ignore possibility of overflow. */
+ dest = mh_xmalloc(n);
+ memcpy(dest, src, n);
- if ((memory = calloc(nmemb, size))) {
- return memory;
- } else {
- adios(NULL, "calloc failed");
- }
+ return dest;
+}
+
+/* Call free(3), if ptr isn't NULL. */
+void mh_xfree(void *ptr)
+{
+ if (ptr)
+ free(ptr); /* Some very old platforms can't cope with NULL. */
}
/*
char *
pwd(void)
{
- register char *cp;
+ char *cp;
static char curwd[PATH_MAX];
if (!getcwd (curwd, PATH_MAX)) {
}
+/* EndsWithC returns true if non-NULL string s ends with a c before the
+ * terminating NUL. */
+bool EndsWithC(char *s, int c)
+{
+ return *s && s[strlen(s) - 1] == c;
+}
+
+
+/* TrimSuffixC deletes c from the end of non-NULL string s if it's
+ * present, shortening s by 1. Only one instance of c is removed. */
+void TrimSuffixC(char *s, int c)
+{
+ if (!*s)
+ return;
+
+ s += strlen(s) - 1;
+ if (*s == c)
+ *s = '\0';
+}
+
+
int
nmh_init(const char *argv0, int read_context) {
- if (! setlocale(LC_ALL, "")) {
- admonish(NULL, "setlocale failed, check your LC_ALL, LC_CTYPE, and "
- "LANG environment variables");
- }
+ int status = OK;
+ char *locale;
invo_name = r1bindex ((char *) argv0, '/');
isatty (fileno (stdout)) && isatty (fileno (stderr))) {
if (nmh_version_changed (check_older_version)) {
printf ("==================================================="
- "====================\n");
+ "=====================\n");
printf ("Welcome to nmh version %s\n\n", VERSION);
- printf ("See the release notes in %s/NEWS .\n\n",
+ printf ("See the release notes in %s/NEWS\n\n",
mhdocdir);
print_intro (stdout, 1);
printf ("\nThis message will not be repeated until "
"nmh is next updated.\n");
printf ("==================================================="
- "====================\n\n");
+ "=====================\n\n");
fputs ("Press enter to continue: ", stdout);
(void) read_line ();
putchar ('\n');
}
}
-
- return OK;
} else {
- int status = context_foil(NULL);
- if (status != OK) {
- advise("", "failed to create minimal profile/conext");
+ if ((status = context_foil(NULL)) != OK) {
+ advise("", "failed to create minimal profile/context");
}
- return status;
}
+
+ /* Allow the user to set a locale in their profile. Otherwise, use the
+ "" string to pull it from their environment, see setlocale(3). */
+ if ((locale = context_find ("locale")) == NULL) {
+ locale = "";
+ }
+
+ if (! setlocale (LC_ALL, locale)) {
+ admonish (NULL, "setlocale failed, check your LC_ALL, LC_CTYPE, and "
+ "LANG environment variables");
+ }
+
+ return status;
}
}
return old_version < current_version ? 1 : 0;
- } else {
- if (context_version == NULL || strcmp(context_version, "nmh-" VERSION) != 0) {
- context_replace ("Version", "nmh-" VERSION);
+ }
- return 1;
- } else {
- return 0;
- }
+ if (context_version == NULL || strcmp(context_version, "nmh-" VERSION) != 0) {
+ context_replace ("Version", "nmh-" VERSION);
+ return 1;
}
+
+ return 0;
}
projects / nmh / blobdiff