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154 lines
4.0 KiB
Plaintext
154 lines
4.0 KiB
Plaintext
#
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# CompareRevisions - Compare the revision in the named file with another revision
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# of the same file.
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#
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# Usage: CompareRevisions file
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#
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# CompareRevisions compares the revision of the named file with another revision
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# of the same file. If they don't match it brings them both up on the screen and
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# puts them side by side. A menu is appended to the menu bar to go through
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# the changes. When all the changes have been shown, the revision windows are
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# restored and closed.
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#
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# The differences are shown from bottom to top so that if any changes are made
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# in the files, the line offsets are not messed up.
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#
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# To add CompareRevisions to a menu, execute the following command:
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#
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# AddMenu Project 'CompareRevisions' 'CompareRevisions "{Active}" ∑∑ "{WorkSheet}"'
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#
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# This script creates three temporary files which are deleted on exit or abort.
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# {ShellDirectory}Compare_File, {ShellDirectory}Compare_State and file,<rev>,
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#
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#
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# NOTE:
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# 1. CompareRevisions calls the script CompareFiles.
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#
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# © Apple Computer, Inc. 1988 - 1990
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# All rights reserved.
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Set Exit 0
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Set error 0
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Begin
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# Check parameters.
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If {#} ≠ 1
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Echo "### Usage - {0} file"
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Exit 0
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End > Dev:StdErr
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# Make sure the file exists
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If "" == "`Exists -f "{1}"`"
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Echo "### {0} - File ∂"{1}∂" not found"
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Exit 4
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End
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# Break apart the pathname.
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Set f "{1}"
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If "{f}" =~ /(≈)®1:(≈)®2/
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Set dir "{®1}:"
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Set f "{®2}"
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Else
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Set dir `directory`
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If "{dir}" =~ /(≈)®1:/
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Set dir "{®1}:"
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End
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End
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Set path "{dir}{f}"
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# See if the file belongs to a project.
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# Then find the name of the parent project.
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(Set info "`ProjectInfo "{path}"`" || Set error 1)
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(Evaluate "{info}" =~ /[¬,]+,([¬ ∂t+*∂']+)®4([+*]«0,1»)®1[∂']* ≈/
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Evaluate "{info}" =~ /≈Project: (≈∫)®2 +Checked out≈/ ) >dev:null
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If {error} ≠ 0 || "{info}" == ""
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Alert "∂"{path}∂" doesn’t belong to a project."
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Exit 0
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End
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Set rev1 "{®4}"
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# At this point:
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# {®1} => '', '+', or '*'
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# {®2} => project path
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# {path} => file pathname
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# {rev1} => revision
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# {dir} => file directory path
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# {f} => file leaf name
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#
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# Is the right project mounted?
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(Set revList "`ProjectInfo -s -project "{®2}" "{f}"`") ≥dev:null
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If "{revlist}" == ""
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Alert "Project ∂"{®2}∂" is not mounted."
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Exit 0
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End
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# Remove checked out ('+') revisions from the revision list.
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Loop
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If "`Evaluate " {revlist}" =~ /(≈)®7 (∂')«0,1»{f},[¬+]+∂+(∂')«0,1»(≈)®8/`"
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Set revlist "{®7}{®8}"
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Else
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Break
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End
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End
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# Remove the current revision from the revision list.
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If ".{®1}" !~ /.[+*]/ && "`Evaluate " {revlist}" =~ /(≈[¬'])®7[∂']«0,1»{f},{rev1}[∂']«0,1»(≈)®8/`"
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Set revlist "{®7}{®8}"
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End > dev:null
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If "{revlist}" =~ / */
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Alert "No revisions to compare against."
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Exit 4 # we're done if the rev list is null
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End
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# Request the number of the revision to be compared.
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(Set rev2 "`GetListItem -r 8 -m "Compare ∂"{f},{rev1}{®1}∂" with:" -d {revList} ∂
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|| Set error {Status}`")
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If {error} == 0
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(Evaluate "{rev2}" =~ /≈,(≈)®7/ ) >dev:null
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Set rev2 "{®7}"
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# Rename the active window so we can checkout a read-only copy of the
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# revision we want to compare against. We'll have to change the name back.
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# Find a temporary directory where I can checkout the file
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Set coDir "{MPW}CompareRevisions.Dir:"
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Delete -i -y "{coDir}"
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NewFolder "{coDir}"
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(Checkout "{f},{rev2}" -d "{coDir}" -project "{®2}" || Set error {Status})
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If {error} ≠ 0
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Alert "∂"{f},{rev2}∂" can’t be checked out [{error}]."
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Rename "{path},{rev1}{®1}" "{path}"
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Delete -i -y "{coDir}"
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Exit 0
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End
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Move "{coDir}{f}" "{path},{rev2}"
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Delete -i -y "{coDir}"
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# Compare the two files and then clean up.
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CompareFiles "{path}" "{path},{rev2}" ∑ dev:null
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Set MyStatus {Status}
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If {MyStatus} == 2
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Echo Delete ∂""{path},{rev2}"∂" >> "{ShellDirectory}Compare_State"
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Else If {MyStatus} == 0
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Alert "Revisions match."
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Delete "{path},{rev2}"
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End
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End
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End
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