X-Git-Url: https://diplodocus.org/git/nmh/blobdiff_plain/17932f7aea1c21cf17738f47996345d9d0a6ce51..d4935c564e1497843ac995957fdb044a2a8891c5:/h/utils.h?ds=sidebyside

diff --git a/h/utils.h b/h/utils.h
index d07e46c1..c5991f42 100644
--- a/h/utils.h
+++ b/h/utils.h
@@ -1,10 +1,27 @@
-
-/*
- * utils.h -- utility prototypes
+/* utils.h -- utility prototypes
  */
 
-void *mh_xmalloc(size_t);
-void *mh_xrealloc(void *, size_t);
+/* Call malloc(3), exiting on NULL return. */
+void *mh_xmalloc(size_t size);
+
+/* Call realloc(3), exiting on NULL return. */
+void *mh_xrealloc(void *ptr, size_t size);
+
+/* Call calloc(3), exiting on NULL return. */
+void *mh_xcalloc(size_t nelem, size_t elsize);
+
+/* Duplicate a NUL-terminated string, exit on failure. */
+char *mh_xstrdup(const char *src);
+
+/* Call free(3), if ptr isn't NULL. */
+void mh_xfree(void *ptr);
+
+/* Set p to point to newly allocated, uninitialised, memory. */
+#define NEW(p) ((p) = mh_xmalloc(sizeof *(p)))
+
+/* Set p to point to newly allocated, zeroed, memory. */
+#define NEW0(p) ((p) = mh_xcalloc(1, sizeof *(p)))
+
 char *pwd(void);
 char *add(const char *, char *);
 char *addlist(char *, const char *);
@@ -43,3 +60,49 @@ int open_form(char **, char *);
 char *find_str (const char [], size_t, const char *);
 char *rfind_str (const char [], size_t, const char *);
 char *nmh_strcasestr (const char *, const char *);
+
+void trunccpy(char *dst, const char *src, size_t size);
+/* A convenience for the common case of dst being an array. */
+#define TRUNCCPY(dst, src) trunccpy(dst, src, sizeof (dst))
+
+bool has_prefix(const char *s, const char *prefix);
+bool has_suffix(const char *s, const char *suffix);
+bool has_suffix_c(const char *s, int c);
+void trim_suffix_c(char *s, int c);
+void to_lower(char *s);
+void to_upper(char *s);
+
+/*
+ * See if a string contains 8 bit characters (use isascii() for the test).
+ * Arguments include:
+ *
+ * start	- Pointer to start of string to test.
+ * end		- End of string to test (test will stop before reaching
+ *		  this point).  If NULL, continue until reaching '\0'.
+ *
+ * This function always stops at '\0' regardless of the value of 'end'.
+ * Returns 1 if the string contains an 8-bit character, 0 if it does not.
+ */
+int contains8bit(const char *start, const char *end);
+
+/*
+ * See if file has any 8-bit bytes.
+ * Arguments include:
+ *
+ * fd    	- file descriptor
+ * eightbit	- address of result, will be set to 1 if the file contains
+ *                any 8-bit bytes, 0 otherwise.
+ *
+ * Returns OK on success, NOTOK on read failure.
+ *
+ */
+int scan_input (int fd, int *eightbit);
+
+
+/*
+ * Compares prior version of nmh with current version.  Returns 1
+ * if they compare the be the same, 0 if not.
+ *
+ * older        - 0 for difference comparison, 1 for only if older
+ */
+int nmh_version_changed (int older);