X-Git-Url: https://git.ozlabs.org/?p=ccan;a=blobdiff_plain;f=ccan%2Fstring%2Fstring.h;h=14a9c2c8fdba86eedbb4c0845c5cd24d69035b34;hp=f4997c69adbef7c08561040c64586235c2892ec2;hb=be6b32cbe44df085efbae36c07b566bda88c6154;hpb=650c775ff00cccd03fc84e7789a03c51d9839004

diff --git a/ccan/string/string.h b/ccan/string/string.h
index f4997c69..14a9c2c8 100644
--- a/ccan/string/string.h
+++ b/ccan/string/string.h
@@ -43,4 +43,67 @@ static inline bool strends(const char *str, const char *postfix)
 
 	return streq(str + strlen(str) - strlen(postfix), postfix);
 }
+
+/**
+ * strsplit - Split string into an array of substrings
+ * @ctx: the context to tallocate from (often NULL)
+ * @string: the string to split
+ * @delims: delimiters where lines should be split.
+ * @nump: optional pointer to place resulting number of lines
+ *
+ * This function splits a single string into multiple strings.  The
+ * original string is untouched: an array is allocated (using talloc)
+ * pointing to copies of each substring.  Multiple delimiters result
+ * in empty substrings.  By definition, no delimiters will appear in
+ * the substrings.
+ *
+ * The final char * in the array will be NULL, so you can use this or
+ * @nump to find the array length.
+ *
+ * Example:
+ *	unsigned int count_long_lines(const char *text)
+ *	{
+ *		char **lines;
+ *		unsigned int i, long_lines = 0;
+ *
+ *		// Can only fail on out-of-memory.
+ *		lines = strsplit(NULL, string, "\n", NULL);
+ *		for (i = 0; lines[i] != NULL; i++)
+ *			if (strlen(lines[i]) > 80)
+ *				long_lines++;
+ *		talloc_free(lines);
+ *		return long_lines;
+ *	}
+ */
+char **strsplit(const void *ctx, const char *string, const char *delims,
+		 unsigned int *nump);
+
+/**
+ * strjoin - Join an array of substrings into one long string
+ * @ctx: the context to tallocate from (often NULL)
+ * @strings: the NULL-terminated array of strings to join
+ * @delim: the delimiter to insert between the strings
+ *
+ * This function joins an array of strings into a single string.  The
+ * return value is allocated using talloc.  Each string in @strings is
+ * followed by a copy of @delim.
+ *
+ * Example:
+ *	// Append the string "--EOL" to each line.
+ *	char *append_to_all_lines(const char *string)
+ *	{
+ *		char **lines, *ret;
+ *		unsigned int i, num, newnum;
+ *
+ *		lines = strsplit(NULL, string, "\n", NULL);
+ *		ret = strjoin(NULL, lines, "-- EOL\n");
+ *		talloc_free(lines);
+ *		return ret;
+ *	}
+ */
+char *strjoin(const void *ctx, char *strings[], const char *delim);
+
+void *grab_fd(const void *ctx, int fd);
+
+void *grab_file(const void *ctx, const char *filename);
 #endif /* CCAN_STRING_H */