gla11y: fix build outside source

We need to pass the absolute path to gla11y for build outside source to
work. We however do not want to expose absolute paths in suppression files,
so we have to introduce a parameter that provides the common prefix to be
stripped.

Change-Id: Iaf652cb8d6c3646438f828a0949dfd811f964e77
Reviewed-on: https://gerrit.libreoffice.org/50568
Reviewed-by: jan iversen <jani@libreoffice.org>
Tested-by: jan iversen <jani@libreoffice.org>

1 files changed, 12 insertions, 4 deletions

diff --git a/bin/gla11y b/bin/gla11y
index 9d550a6ea001..13f1c8e98b97 100755
--- a/bin/gla11y
+++ b/bin/gla11y
@@ -42,6 +42,7 @@ progname = os.path.basename(sys.argv[0])
 suppressions = {}
 gen_suppr = None
 gen_supprfile = None
+suppr_prefix = ""
 outfile = None
 pflag = False
 Werror = False
@@ -133,10 +134,12 @@ def elm_suppr(filename, tree, elm, msgtype):
     Return the prefix to be displayed to the user and the suppression line for
     the warning type "msgtype" for element "elm"
     """
-    global gen_suppr, gen_supprfile, pflag
+    global gen_suppr, gen_supprfile, suppr_prefix, pflag
 
     if suppressions or gen_suppr is not None or pflag:
         prefix = errpath(filename, tree, elm)
+        if prefix[0:len(suppr_prefix)] == suppr_prefix:
+            prefix = prefix[len(suppr_prefix):]
 
     if suppressions or gen_suppr is not None:
         suppr = '%s %s' % (prefix, msgtype)
@@ -151,6 +154,8 @@ def elm_suppr(filename, tree, elm, msgtype):
     if not pflag:
         # Use user-friendly line numbers
         prefix = elm_prefix(filename, elm)
+        if prefix[0:len(suppr_prefix)] == suppr_prefix:
+            prefix = prefix[len(suppr_prefix):]
 
     return (prefix, suppr)
 
@@ -322,20 +327,21 @@ def check_a11y_relation(filename, tree):
 
 
 def usage():
-    print("%s [-W error|none] [-p] [-g SUPPR_FILE] [-s SUPPR_FILE] [-o LOG_FILE] [file ... | -L filelist]" % progname,
+    print("%s [-W error|none] [-p] [-g SUPPR_FILE] [-s SUPPR_FILE] [-P SUPPR_PREFIX] [-o LOG_FILE] [file ... | -L filelist]" % progname,
           file=sys.stderr)
     print("  -p print XML class path instead of line number");
     print("  -g Generate suppression file SUPPR_FILE");
     print("  -s Suppress warnings given by file SUPPR_FILE");
+    print("  -P Suppress SUPPR_PREFIX from emitted warnings, e.g. absolute source directory");
     print("  -o Also prints errors and warnings to given file");
     sys.exit(2)
 
 
 def main():
-    global pflag, Werror, Wnone, gen_suppr, gen_supprfile, suppressions, errors, outfile
+    global pflag, Werror, Wnone, gen_suppr, gen_supprfile, suppressions, suppr_prefix, errors, outfile
 
     try:
-        opts, args = getopt.getopt(sys.argv[1:], "W:pg:s:o:L:")
+        opts, args = getopt.getopt(sys.argv[1:], "W:pg:s:P:o:L:")
     except getopt.GetoptError:
         usage()
 
@@ -354,6 +360,8 @@ def main():
             gen_suppr = a
         elif o == "-s":
             suppr = a
+        elif o == "-P":
+            suppr_prefix = a
         elif o == "-o":
             out = a
         elif o == "-L":