Merge pull request #56 from rekka/feat-synctex

Fix SyncTeX

Author: pkgw

tectonic/core-bridge.c

@@ -137,6 +137,27 @@ ttstub_issue_error(const_string format, ...)
     TGB->issue_error(TGB->context, error_buf);
 }
 
+PRINTF_FUNC(2,3) int
+ttstub_fprintf(rust_output_handle_t handle, const_string format, ...)
+{
+    static char fprintf_buf[BUF_SIZE] = "";
+    va_list ap;
+
+    va_start(ap, format);
+    int len = vsnprintf(fprintf_buf, BUF_SIZE, format, ap);
+    va_end(ap);
+
+    if (len >= BUF_SIZE) {
+        len = BUF_SIZE - 1;
+        fprintf_buf[len] = '\0';
+    }
+
+    if (len >= 0) {
+        ttstub_output_write(handle, (unsigned char*) fprintf_buf, len);
+    }
+    return len;
+}
+
 int
 ttstub_get_file_md5(char const *path, unsigned char *digest)
 {

tectonic/core-bridge.h

@@ -138,6 +138,7 @@ extern char *kpse_find_file (char const *name, kpse_file_format_type format, int
 
 extern PRINTF_FUNC(1,2) void ttstub_issue_warning(const_string format, ...);
 extern PRINTF_FUNC(1,2) void ttstub_issue_error(const_string format, ...);
+extern PRINTF_FUNC(2,3) int ttstub_fprintf(rust_output_handle_t handle, const_string format, ...);
 
 extern int ttstub_get_file_md5 (char const *path, unsigned char *digest);
 extern int ttstub_get_data_md5 (unsigned char const *data, size_t len, unsigned char *digest);