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| == Message standardization ==
| | {{MovedToTrac|MessageStandardization}} |
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| === How should Errors/Warnings/Messages be formatted ===
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| * strings '''< >'''
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| ** e.g. Raster map <%s> not found
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| * numbers '''[ ]'''
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| ** e.g. Line [%d] deleted
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| : ? The [bracketed] parenthetical disrupts the flow of the phrase and doesn't help enhance clarity of meaning. IMHO, this reads better without [] brackets: "''Line %d deleted.''" [] Brackets should be used when value is outside of the phrase: ''"Unknown line [%d]"''. --HB
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| '''Discussion:'''
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| Statistics [2007-04-11]:
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| <div style="margin-left: 30px">
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| {|border="1" | |
| !symbol || align="right"| number of code lines
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| |-
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| |<%s> || align="right"| 637
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| |-
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| |[%s] || align="right"| 690
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| |-
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| |'%s' || align="right"| 354
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| |-
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| |<%d> || align="right"| 12
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| |-
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| |[%d] || align="right"| 207
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| |-
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| |'%d' || align="right"| 3
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| |-
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| |}
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| </div>
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| === Macros to be defined for C library ===
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| * MSG_RASTER_NOT_FOUND_IN_MAPSET - "Raster map <%s> not found in <%s>"
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| * MSG_CANNOT_OPEN_RASTER - "Failed opening raster map <%s>"
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| * MSG_CANNOT_OPEN_FILE - Cannot open file <%s>
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| Note: Problem with xgettext package. How to use macros to work with xgettext?
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| === Standard messages sandbox ===
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| * First letter should be capitalized
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| * Use the present tense (cannot instead of could not; '''better: unable to''')
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| * Avoid contractions (cannot instead of can't)
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| * Good sentence construction ("Cannot find input map <%s>" instead of "It could not be find input map <%s>")
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| * Be consistent with periods. Either end all phrases with a period or none. Without periods the translators save also some time
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| : Complete sentences or all parts of a message with multiple sentences should end with periods. Short phrases should not. Punctuated events, such as errors, deserve a period. e.g. ''"Operation complete."'' Phrases which imply ongoing action look odd if missing an ellipse or any other form of punctuation. Phrase != Sentence. --HB
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| * Either all '''module''' descriptions should end with periods or not. As some are multi-sentence, and thus should end in a period for consistency within the message, so probably they all should end in one. Currently by my count 237 end with '.', 139 do not. In the multi-sentence case it may be posible to put the simple description in the module->label field and additional explanitory text into the ->description field.
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| * '''option''' and '''flag''' descriptions generally should not end in a period (more likely to be phrases than sentences). But they can suffer the same multi-sentence period problem as module descriptions. In this case splitting out additional text into a ->label, ->description split may help.
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| ==== DB messages ====
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| :db_open_database()
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| ::Cannot open database <%s> by driver <%s>
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| :db_execute_immediate()
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| ::Cannot insert new record: %s
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| ::Cannot create table <%s>
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| :db_grant_on_table()
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| ::Cannot grant privileges on table <%s>
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| :db_start_driver_open_database()
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| ::G_fatal_error(_("Cannot open database <%s> by driver <%s>"), Fi->database, Fi->driver);
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| ==== General messages ====
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| :G_legal_filename()
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| ::<%s> illegal file name
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| :G_set_window()
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| ::Invalid graphics coordinates
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| ::Cannot set window
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| :D_do_conversions()
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| ::Error calculating graphics-region conversions
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| ==== Raster messages ====
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| :G_find_cell2()
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| ::Raster map <%s> not found
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| ::Raster map <%s> not found in the current mapset
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| ::Raster map <%s> not found in <%s>
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| :G_get_cellhd()
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| ::Cannot read header of raster map <%s>
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| :G_open_cell_old()
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| ::Cannot open raster map <%s>
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| :G_open_cell_new()
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| ::Cannot create raster map <%s>
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| :G_get_raster_row()
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| ::Cannot read raster row [%d] from raster map <%s>
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| :G_put_raster_row()
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| ::Cannot write raster row [%d] to raster map <%s>
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| ==== Vector messages ====
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| :G_find_vector2()
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| ::Vector map <%s> not found
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| ::Vector map <%s> not found in the current mapset
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| ::Vector map <%s> not found in <%s>
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| :Vect_open_old()
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| ::Cannot open vector map <%s>
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| ::Cannot open vector map <%s> at topo level [%d]
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| :Vect_get_field()
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| ::"Database connection not defined for layer <%d>"
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| ==== Messages Discussion ====
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| * "Map <roads> in <user1>" or "Map <roads@user1>"
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| ''Proposed standard responses in bold.''
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| * G_get_raster_row
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| : "'''Unable to read raster map <%s> row %d'''"
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| <pre>
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| Cannot get raster raster of input map
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| Cannot raster raster of input map
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| Cannot read raster row [%d]
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| Can't get row %d from raster map %s
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| can't read row in input elevation map
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| Could not read from <%s>
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| Could not read from <%s>, row=%d
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| Error getting input null cells
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| error reading hue data
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| Error reading 'hue' map
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| Error reading input
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| error reading intensity data
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| Error reading 'intensity' map
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| Error reading map %s
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| Error reading row of data
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| error reading saturation data
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| Error reading 'saturation' map
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| G_get_raster_row failed
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| reading map
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| Reading map
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| Reading row %d
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| read_row: error reading data
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| %s: Unable to read raster map [%s]
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| Unable to get row %d from raster map
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| Unable to get row %d from <%s>
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| Unable to read map raster row %d
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| Unable to read raster row.
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| Unable to read raster row %d
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| Unable to read row %i\n
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| </pre>
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| * G_put_raster_row
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| :"'''Failed writing raster map <%s> row %d'''"
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| <pre>
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| Cannot write row to raster map
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| Cannot write to <%s>
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| Error while writing new cell map.
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| Error writing cell map during transform.
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| error writing data
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| Error writing output map
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| G_put_raster_row failed (file system full?)
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| %s - ERROR writing %s
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| Unable to properly write output raster map
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| unable to write map row %d
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| </pre>
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| * G_open_cell_new
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| : "'''Unable to create raster map <%s>'''"
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| <pre>
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| Cannot open output raster map <%s>
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| can't open %s
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| Error in opening output file <%s>
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| Unable to create output <%s>
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| Unable to create raster map <%s>
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| Unable to create raster map [%s]
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| Unable to open cell map <%s> for output.\n
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| Unable to open output file.
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| Unable to open the cell map MASK.
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| </pre>
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| * G_open_cell_old
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| : "'''Unable to open raster map <%s>'''"
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| <pre>
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| Cannot find map %s
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| Cannot find mapset for %s
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| Cannot open File %s
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| Cannot open input raster map <%s>
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| Cannot open map %s
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| Cannot open raster map
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| Cannot open raster map <%s>
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| Cannot open raster map [%s]
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| Cannot open raster map [%s]!
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| Cannot open %s
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| Cannot open seed map <%s@%s>!
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| Cannot open terrain raster map <%s@%s>!
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| Can't open input map
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| can't open raster map [%s]
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| can't open raster map <%s> in mapset %s
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| can't open %s
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| Could not open raster <%s>
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| Could not open raster '%s'
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| Error in opening input file <%s>
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| Not able to open cellfile for [%s]
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| Problem opening input file [%s]
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| Raster file <%s> not found
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| Raster map [%s] not found
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| %s - can't open raster map
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| <%s> cellfile not found
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| %s: Couldn't open raster <%s@%s>
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| %s: o_open_file: could not open raster map %s in %s
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| %s - raster map not found
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| Unable to open band files.
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| Unable to open cellfile for [%s]
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| Unable to open map <%s>
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| Unable to open MASK
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| Unable to open raster map [%s]
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| Unable to open raster <%s>
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| unable to open [%s] in [%s]
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| Unable to proceed
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| </pre>
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| * G_find_cell
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| : "'''Raster map <%s> not found'''"
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| <pre>
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| albedo raster map <%s> not found
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| aspin raster map <%s> not found
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| Cannot find map %s
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| Cannot find mapset for %s
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| Cannot find raster map
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| Cannot find %s
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| cell file [%s] not found
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| coefbh raster map <%s> not found
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| elevin raster map <%s> not found
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| Input map [%s] in location [%s] in mapset [%s] not found.
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| latin raster map <%s> not found
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| linkein raster map <%s> not found
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| No clump map specified and MASK not set.
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| Raster file [%s] not found. Exiting.
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| Raster map [%s] already exists.\nPlease try another.
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| Raster map <%s> not found
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| Raster map [%s] not found
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| Raster <%s> already exist.
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| Raster <%s> not found
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| Raster '%s' not found
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| Requested raster map <%s> not found
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| [%s] cannot be found!
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| %s - exits in Mapset <%s>, select another name
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| slopein raster map <%s> not found
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| %s: more than %d files not allowed
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| %s - not found
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| %s: o_open_file: raster map %s not found
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| %s: <%s> raster map not found
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| %s: %s - raster map not found
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| %s: %s - Unable to find the imaginary-image.
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| %s: %s - Unable to find the real-image map.
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| stringliteral
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| Training map [%s] not found.
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| Unable to find base map <%s>
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| Unable to find cell map <%s>
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| Unable to find cover map <%s>
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| Unable to find file [%s].
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| Unable to find input cell map <%s>
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| Unable to find raster [%s].
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| </pre>
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| * G_find_vector
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| : "'''Vector map <%s> not found'''"
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| <pre>
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| Cannot find input map <%s>
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| Cannot find vector map
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| Cannot not find input vector map <%s>
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| Could not find input map <%s>
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| Could not find input map <%s>.
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| Could not find input map '%s'.
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| Could not find input map <%s> in current mapset.
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| Could not find input map <%s>\n
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| Could not find input %s
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| Could not find input %s\n
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| Could not find input vector map <%s>
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| Could not find input vector map %s
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| Could not find network input map '%s'.
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| Could not find vector map %s
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| Could not find vector map <%s> in current mapset
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| Could not find vector '%s'
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| It could not be find input map <%s>
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| It could not be found input map <%s>
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| Vector file [%s] not available
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| vector map <%s> not found
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| Vector map '%s' not found
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| </pre>
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| == Systematic Approach ==
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| * Collect all possible error states from functions
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| * assign error codes for macros?
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| * G_option() parameters (like output->description = ("Path to resulting ASCII file");)
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| Note: Would be possible to conctretize your ideas? (MartinL)
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| === Parameters and flags ===
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| Fix the parameters and flags. Make it a concept. See proposal in GRASS 5 [http://freegis.org/cgi-bin/viewcvs.cgi/grass/documents/parameter_proposal.txt?rev=HEAD&content-type=text/vnd.viewcvs-markup documents/parameter_proposal.txt]
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| == Verbosity levels ==
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| === Current abstract concept ===
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| {| border="1" | |
| |-
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| |type || GRASS_VERBOSE || libgis || command line || result || libgis fn
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| |-
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| |verbose || 3 || MAX_LEVEL || --verbose || print progress and all messages messages || G_verbose_message()
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| |-
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| |standard || 2 || STD_LEVEL || || print progress and selected messages || G_message()
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| |-
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| |brief || 1 || || || print only progress information (% done) || G_percent(), G_clicker()
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| |-
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| |quiet || 0 || MIN_LEVEL || --quiet || print nothing (only ERRORs and WARNINGs) || G_message()
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| |-
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| |debug || || 0-5 || || print debug message at DEBUG level set with g.gisenv || G_debug(#, "")
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| |-
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| |mute || - || || 2>&1 > /dev/null || only for use in rare occasions ||
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| |}
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| ;Proposal
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| * module output (should be "parsable") is not controlled by GRASS_VERBOSE [use fprintf (stdout, ...)]
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| * quiet
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| : only warnings and fatal errors are printed
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| * brief
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| : all G_percent() and selected G_message() (especially connected to progress information, up to the programmer ??)
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| * standard
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| : all G_percent() and selected G_message()
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| * verbose
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| : all G_percent() + G_message() + G_verbose_message()
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| ;Modification
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| * '''remove''' verbose level → standard == all G_percent () + G_messages()
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| * move some messages to G_debug()
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| * change level numbers to 1, 3, 5
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| * Add new G_msg(int level, "%format", ...); lib function. Existing G_message() could stay and would be the same as G_msg(LEVEL_STD,...).
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| ;Discussion
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| * HB: I'm quite happy to leave the current system as it is, but use GRASS_MESSAGE_FORMAT=silent to switch off G_percent(),G_clicker() output.
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| :Mixing a sliding verbosity scale plus a binary switch or >= rule for when G_percent() happens in the same variable is very messy IMO.
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| === Alternative Abstract concept ===
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| {|
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| |-
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| |standard || 3 || PERMSG_MODE || print progress and messages
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| |-
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| |standard || 2 || MESSAGE_MODE || print only messages
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| |-
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| |brief || 1 || PERCENT_MODE || print only progress information
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| |-
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| |silent but not mute || 0 || QUIET_MODE || print nothing (but ERR and WAR)
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| |-
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| |mute || 2>&1 > /dev/null
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| |-
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| |}
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| [[Category:Development]]
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