[mapserver-dev] RFC-93: UTFGrid output

[Even Rouault]

Hi François,

> My code is already escaping non-valid characters in the JSON. It should
> always return a valid one.

Are you sure of that ?

Consider this :

$ cat test.csv
id,name,WKT
"a""b\c","d""e\f","POINT(2 49)"

$ ogrinfo test.csv -al
INFO: Open of `test.csv'
      using driver `CSV' successful.

Layer name: test
Geometry: Unknown (any)
Feature Count: 1
Extent: (2.000000, 49.000000) - (2.000000, 49.000000)
Layer SRS WKT:
(unknown)
id: String (0.0)
name: String (0.0)
WKT: String (0.0)
OGRFeature(test):1
  id (String) = a"b\c
  name (String) = d"e\f
  WKT (String) = POINT(2 49)
  POINT (2 49)

$ cat test_utfgrid.map
MAP

SIZE 10 10
EXTENT 1 48 3 50

OUTPUTFORMAT
  NAME "utfgrid"
  DRIVER UTFGRID
  MIMETYPE "application/json"
  EXTENSION "json"
END

LAYER
  NAME test
  CONNECTIONTYPE OGR
  CONNECTION "test.csv"
  UTFITEM   "id"
  UTFDATA   "{\"id\":\"[id]\",\"name\":\"[name]\"}"
  TYPE POINT
  STATUS ON
  CLASS
    COLOR 0 0 0
  END
END

END

$ shp2img -m test_utfgrid.map  -o out.json

$ cat out.json 
{"grid":["  ","  "],"keys":["","a"b\c"],"data":{"a"b\c":
{"id":"a"b\c","name":"d"e\f"}}}

The strings in keys and data are not JSON escaped.

> Also, I don't have enough time to add the suggested mode before the end of
> the project and school restarting.

Understood. That was just an idea. And others might disagree it is 
appropriate.

Even

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