strbuf.c: add `strbuf_insertf()` and `strbuf_vinsertf()`

diff --git a/strbuf.h b/strbuf.h
index bf18fddb5bb7883c089b30cfabc54cc5a9d055b9..8f8fe01e68dc868f4154c8b733f6a86b2df9c4bd 100644 (file)
--- a/strbuf.h
+++ b/strbuf.h
@@ -190,6 +190,9 @@ void strbuf_ltrim(struct strbuf *sb);
 /* Strip trailing directory separators */
 void strbuf_trim_trailing_dir_sep(struct strbuf *sb);
 
+/* Strip trailing LF or CR/LF */
+void strbuf_trim_trailing_newline(struct strbuf *sb);
+
 /**
  * Replace the contents of the strbuf with a reencoded form.  Returns -1
  * on error, 0 on success.
@@ -241,6 +244,15 @@ void strbuf_addchars(struct strbuf *sb, int c, size_t n);
  */
 void strbuf_insert(struct strbuf *sb, size_t pos, const void *, size_t);
 
+/**
+ * Insert data to the given position of the buffer giving a printf format
+ * string. The contents will be shifted, not overwritten.
+ */
+void strbuf_vinsertf(struct strbuf *sb, size_t pos, const char *fmt,
+                    va_list ap);
+
+void strbuf_insertf(struct strbuf *sb, size_t pos, const char *fmt, ...);
+
 /**
  * Remove given amount of data from a given position of the buffer.
  */
@@ -285,6 +297,13 @@ static inline void strbuf_addstr(struct strbuf *sb, const char *s)
  */
 void strbuf_addbuf(struct strbuf *sb, const struct strbuf *sb2);
 
+/**
+ * Join the arguments into a buffer. `delim` is put between every
+ * two arguments.
+ */
+const char *strbuf_join_argv(struct strbuf *buf, int argc,
+                            const char **argv, char delim);
+
 /**
  * This function can be used to expand a format string containing
  * placeholders. To that end, it parses the string and calls the specified
@@ -582,10 +601,12 @@ void strbuf_add_unique_abbrev(struct strbuf *sb,
  * run in. If the buffer is NULL the editor is launched as usual but the
  * file's contents are not read into the buffer upon completion.
  */
-int launch_editor(const char *path,
-                 struct strbuf *buffer,
+int launch_editor(const char *path, struct strbuf *buffer,
                  const char *const *env);
 
+int launch_sequence_editor(const char *path, struct strbuf *buffer,
+                          const char *const *env);
+
 void strbuf_add_lines(struct strbuf *sb,
                      const char *prefix,
                      const char *buf,