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| == Systematic Approach ==
| | {{MovedToTrac|MessageStandardization}} |
| * 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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| == How should Errors/Warnings/Messages be formatted ==
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| * strings < >
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| * numbers [ ]
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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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| == 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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| {| | |
| |-
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| |verbose || 3 || MAX_LEVEL || print progress and all messages messages
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| |-
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| |standard || 2 || STD_LEVEL || print progress and selected messages
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| |-
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| |brief || 1 || || print only progress information
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| |-
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| |silent but not mute || 0 || MIN_LEVEL || 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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| ;Proposal
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| * module output (should be "parsable") is not controlled by GRASS_VERBOSE [use fprintf (stdout, ...)]
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| * silent
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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()
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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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| === Abstract concept version 2 ===
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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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