Labeling using the TEXT function does not work properly

[misart]

Text "BBB" in the Label section should override the text "AAA" in Class section, but it doesn't. Please check example below:

MAP
   NAME DEMO
   STATUS ON
   SIZE 150 150
   EXTENT 0 0 150 150
   IMAGECOLOR 255 255 255
   IMAGETYPE png
   FONTSET  "data/fonts.lst"
   LAYER
     NAME foo
     TYPE POINT
     STATUS DEFAULT
     TRANSFORM False
     FEATURE
       POINTS
         50 50
       END
     END
     CLASS
       TEXT "AAA"
       LABEL
         SIZE 10
         COLOR 0 0 0
         FONT "default"
         TYPE truetype     
         TEXT "BBB"       # doesn't work
       END
     END
   END
END

System: Ubuntu 12.04 MapServer: version 6.2.0 OUTPUT=PNG OUTPUT=JPEG SUPPORTS=PROJ SUPPORTS=AGG SUPPORTS=FREETYPE SUPPORTS=ICONV SUPPORTS=WMS_SERVER SUPPORTS=WFS_SERVER SUPPORTS=WCS_SERVER SUPPORTS=THREADS SUPPORTS=GEOS INPUT=JPEG INPUT=OGR INPUT=GDAL INPUT=SHAPEFILE

[homme]

I'm guessing you still get an output image but it has AAA instead of BBB? Or is there some other kind of failure? I know you posted your version information above, but can you please post the output from:

var mapserv = require('mapserv');
console.log(mapserv.versions);

Thanks.

[misart]

I'm guessing you still get an output image but it has AAA instead of BBB

Yes, I get image with label AAA from node-mapserv, but if I execute this:

mapserv -nh "demo.map&mode=map" >test.png

... then I get image with proper label BBB.

My version from node: { node_mapserv: '0.1.0', mapserver: '6.2.0', mapserver_details: 'MapServer version 6.2.0 OUTPUT=PNG OUTPUT=JPEG SUPPORTS=PROJ SUPPORTS=AGG SUPPORTS=FREETYPE SUPPORTS=ICONV SUPPORTS=WMS_SERVER SUPPORTS=WFS_SERVER SUPPORTS=WCS_SERVER SUPPORTS=THREADS SUPPORTS=GEOS INPUT=JPEG INPUT=OGR INPUT=GDAL INPUT=SHAPEFILE' }

[homme]

Thanks. I've looked into this and it appears to be a bug in the underlying mapserver library. I have fixed this and issued a pull request: mapserver/mapserver/pull/4593. Patching your mapserver installation with this fix should solve your issue.

This patch fixes the msCopyLabel function, which is called by msCopyMap. node-mapserv calls msCopyMap on each rendering request to copy the original C mapObj data structure. This is necessary because mapserver can alter the mapObj when processing a request.