Support for XSLT template for CSV import

This will allow one to give CSV tag as parameter when importing CSV
files. On normal case one will use csv, but when special handling is
needed we can give a specific XSLT file instead.

Signed-off-by: Miika Turkia <miika.turkia@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

2 files changed, 28 insertions, 9 deletions

diff --git a/dive.h b/dive.h
index d3bada163..e4c4e354c 100644
--- a/dive.h
+++ b/dive.h
@@ -627,7 +627,7 @@ extern void set_filename(const char *filename, bool force);
 extern int parse_dm4_buffer(const char *url, const char *buf, int size, struct dive_table *table, char **error);
 
 extern void parse_file(const char *filename, char **error);
-extern void parse_csv_file(const char *filename, int time, int depth, int temp, int po2f, int cnsf, int stopdepthf, int sepidx, char **error);
+extern void parse_csv_file(const char *filename, int time, int depth, int temp, int po2f, int cnsf, int stopdepthf, int sepidx, const char *csvtemplate, char **error);
 
 extern void save_dives(const char *filename);
 extern void save_dives_logic(const char *filename, bool select_only);
diff --git a/file.c b/file.c
index 644aca750..bfc37bdfa 100644
--- a/file.c
+++ b/file.c
@@ -98,7 +98,7 @@ static int try_to_open_zip(const char *filename, struct memblock *mem, char **er
 	return success;
 }
 
-static int try_to_xslt_open_csv(const char *filename, struct memblock *mem, char **error)
+static int try_to_xslt_open_csv(const char *filename, struct memblock *mem, char **error, const char *tag)
 {
 	char *buf;
 
@@ -114,14 +114,33 @@ static int try_to_xslt_open_csv(const char *filename, struct memblock *mem, char
 
 	/* Surround the CSV file content with XML tags to enable XSLT
 	 * parsing
+	 *
+	 * Tag markers take: strlen("<></>") = 5
 	 */
-	buf = realloc(mem->buffer, mem->size + strlen("<csv></csv>"));
+	buf = realloc(mem->buffer, mem->size + 5 + strlen(tag) * 2);
 	if (buf != NULL) {
-		memmove(buf + 5, buf, mem->size);
-		memcpy(buf, "<csv>", 5);
-		memcpy(buf + mem->size + 5, "</csv>", 7);
-		mem->size += strlen("<csv></csv>");
+		char *starttag = NULL;
+		char *endtag = NULL;
+
+		starttag = malloc(3 + strlen(tag));
+		endtag = malloc(4 + strlen(tag));
+
+		if (starttag == NULL || endtag == NULL) {
+			*error = strdup("Memory allocation failed in __func__\n");
+			return 1;
+		}
+
+		sprintf(starttag, "<%s>", tag);
+		sprintf(endtag, "</%s>", tag);
+
+		memmove(buf + 2 + strlen(tag), buf, mem->size);
+		memcpy(buf, starttag, 2 + strlen(tag));
+		memcpy(buf + mem->size + 2 + strlen(tag), endtag, 4 + strlen(tag));
+		mem->size += (5 + 2 * strlen(tag));
 		mem->buffer = buf;
+
+		free(starttag);
+		free(endtag);
 	} else {
 		/* we can atleast try to strdup a error... */
 		*error = strdup("realloc failed in __func__\n");
@@ -330,7 +349,7 @@ void parse_file(const char *filename, char **error)
 
 #define MAXCOLDIGITS 3
 #define MAXCOLS 100
-void parse_csv_file(const char *filename, int timef, int depthf, int tempf, int po2f, int cnsf, int stopdepthf, int sepidx, char **error)
+void parse_csv_file(const char *filename, int timef, int depthf, int tempf, int po2f, int cnsf, int stopdepthf, int sepidx, const char *csvtemplate, char **error)
 {
 	struct memblock mem;
 	int pnr=0;
@@ -392,7 +411,7 @@ void parse_csv_file(const char *filename, int timef, int depthf, int tempf, int
 	if (filename == NULL)
 		return;
 
-	if (try_to_xslt_open_csv(filename, &mem, error))
+	if (try_to_xslt_open_csv(filename, &mem, error, csvtemplate))
 		return;
 
 	parse_xml_buffer(filename, mem.buffer, mem.size, &dive_table, (const char **)params, error);