[PATCH 2/6] lib: fwts_log: add fwts_log_get_filenames()

[Colin King]

From: Colin Ian King <colin.king at canonical.com>

Add function to return back a string of all the log filenames being
used.  For multi-log logging, this returns multiple filenames
separated by a space, e.g. "results.log results.html results.json"

Signed-off-by: Colin Ian King <colin.king at canonical.com>
---
 src/lib/include/fwts_log.h |    1 +
 src/lib/src/fwts_log.c     |   40 ++++++++++++++++++++++++++++++++++++++++
 2 files changed, 41 insertions(+)

diff --git a/src/lib/include/fwts_log.h b/src/lib/include/fwts_log.h
index 513bf88..22ec70e 100644
--- a/src/lib/include/fwts_log.h
+++ b/src/lib/include/fwts_log.h
@@ -144,6 +144,7 @@ int 	  fwts_log_line_number(fwts_log *log);
 void	  fwts_log_set_line_width(const int width);
 void	  fwts_log_section_begin(fwts_log *log, const char *name);
 void	  fwts_log_section_end(fwts_log *log);
+char     *fwts_log_get_filenames(const char *filename, fwts_log_type type);
 fwts_log_filename_type fwts_log_get_filename_type(const char *name);
 
 static inline int fwts_log_type_count(fwts_log_type type)
diff --git a/src/lib/src/fwts_log.c b/src/lib/src/fwts_log.c
index 3ab7930..d946c31 100644
--- a/src/lib/src/fwts_log.c
+++ b/src/lib/src/fwts_log.c
@@ -562,6 +562,46 @@ fwts_log_filename_type fwts_log_get_filename_type(const char *filename)
 }
 
 /*
+ *  fwts_log_filenames()
+ *	return string of all the log filenames that will be used
+ */
+char *fwts_log_get_filenames(const char *filename, fwts_log_type type)
+{
+	unsigned int i;
+	char *filenames = NULL;
+	char *tmp;
+	size_t len = 0;
+
+	for (i=0; i<32; i++) {
+		fwts_log_type mask = 1 << i;
+		if (type & mask) {
+			if ((tmp = fwts_log_filename(filename, mask)) == NULL)
+				return NULL;
+
+			if (filenames) {
+				len += strlen(tmp) + 2;
+				if ((filenames = realloc(filenames, len)) == NULL) {
+					free(tmp);
+					return NULL;
+				}
+				strcat(filenames, " ");
+				strcat(filenames, tmp);
+			} else {
+				len = strlen(tmp) + 1;
+				if ((filenames = malloc(len)) == NULL) {
+					free(tmp);
+					return NULL;
+				}
+				strcpy(filenames, tmp);
+			}
+			free(tmp);
+		}
+	}
+
+	return filenames;
+}
+
+/*
  *  fwts_log_open()
  *	open a log file. if name is stderr or stdout, then attach log to these
  *	streams.
-- 
1.7.10.4