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178 lines
8.7 KiB
Plaintext
178 lines
8.7 KiB
Plaintext
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*alternate.txt* Alternate Plugin Sat May 13 15:35:38 CDT 2006
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Author: Michael Sharpe <feline@irendi.com>
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Copyright: (c) 2000-2006 Michael Sharpe
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We grant permission to use, copy modify, distribute, and sell this
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software for any purpose without fee, provided that the above
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copyright notice and this text are not removed. We make no guarantee
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about the suitability of this software for any purpose and we are
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not liable for any damages resulting from its use. Further, we are
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under no obligation to maintain or extend this software. It is
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provided on an "as is" basis without any expressed or implied
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warranty.
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==============================================================================
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1. Contents *AS* *AV* *AT* *AN* *IH* *IHS* *IHV* *IHT* *IHN* *alternate*
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1. Contents...........................: |alternate|
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2. Purpose............................: |alternate-purpose|
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3. Commands...........................: |alternate-commands|
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4. Configuration......................: |alternate-config|
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5. Installation.......................: |alternate-installation|
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6. Bugs/Enhancements..................: |alternate-support|
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7. Acknowledgments....................: |alternate-acknowledgments|
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==============================================================================
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2. Purpose *alternate-purpose*
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The purpose of a.vim is to allow quick and easy switching between source files
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and corresponding header files. Many languages (C, C++, ada, ocaml, lex/yacc)
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have the concept of source/header files or the like. It is quite common during
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development or review to need to edit both files together. This plugin attempts
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to simplify that process. There are commands which while editing a source
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file allow for the quick switching to the corresponding header and vice versa.
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The only difference between the commands is how the switch occurs. More recent
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functionality allow the switching to a file under the cursor too. In the
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following sections the commands, configuration and installation procedures are
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described.
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==============================================================================
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3. Commands *alternate-commands*
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There are 4 commands provided by this plugin. They are
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:A switches to the header file corresponding to the source file in the current
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buffer (or vice versa).
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:AS similar to :A except the current buffer is split horizontally such that the
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source file is on one split and the header is in the other.
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:AV similar to :AS except that the split is vertical
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:AT similar to :AS and :AV except a new tab is opened instead of a split
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:IH switches to the file under cursor (or the file specified with the
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command). This command uses the builtin a.vim search path support and the
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&path variable in conjunction.
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:IHS similar to :IH execpt the current buffer is split horizontally first
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:IHS similar to :IH execpt the current buffer is split vertically first
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:IHS similar to :IH execpt a new tab is created for the file being switched to
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:IHN switches to the next matching file for the original selection
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In all cases if the corresponding alternate file is already loaded that buffer
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is preferred. That is this plugin will never load the same file twice.
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Some maps are also provided for the IH command (mainly for example purposes)
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<Leader>ih - switches to the file under the cursor using the :IHS command
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<Leader>is - switches to the source file of the header file under the cursor
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using the :IHS command and the :A command
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<leader>ihn - switches to the next match in the sequence.
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==============================================================================
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4. Configuration *alternate-config*
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It is possible to configure three separate pieces of behaviour of this plugin.
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a) Extensions: Each language has different extensions for identifying the
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source and header files. Many languages support multiple different but related
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extensions. As such this plugin allow for the complete specification of how
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source and header files correspond to each other via extension maps. There are
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a number of maps built in. For example, the following variable setting
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g:alternateExtensions_CPP = "inc,h,H,HPP,hpp"
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indicates that any file with a .CPP exetension can have a corresponding file
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with any of the .inc, .h, .H, .HPP, .hpp extension. The inverse is not
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specified by this map though. Typically each extension will have a mapping. So
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there would exist maps for .h, .inc, .H, .HPP, .hpp too. Extension maps should
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be specified before loading this plugin. Some of the builtin extension maps are
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as follows,
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C and C++
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g:alternateExtensions_h = "c,cpp,cxx,cc,CC"
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g:alternateExtensions_H' = "C,CPP,CXX,CC"
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g:alternateExtensions_cpp' = "h,hpp"
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g:alternateExtensions_CPP' = "H,HPP"
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g:alternateExtensions_c' = "h"
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g:alternateExtensions_C' = "H"
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g:alternateExtensions_cxx' = "h"
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Ada
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g:alternateExtensions_adb' = "ads"
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g:alternateExtensions_ads' = "adb"
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Lex/Yacc
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g:alternateExtensions_l' = "y,yacc,ypp"
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g:alternateExtensions_lex' = "yacc,y,ypp"
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g:alternateExtensions_lpp' = "ypp,y,yacc"
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g:alternateExtensions_y' = "l,lex,lpp"
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g:alternateExtensions_yacc' = "lex,l,lpp"
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g:alternateExtensions_ypp' = "lpp,l,lex"
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b) Search Paths: In many projects the location of the source files and the
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corresponding header files is not always the same directory. This plugin allows
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the search path it uses to locate source and header files to be configured.
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The search path is specified by setting the g:alternateSearchPath variable. The
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default setting is as follows,
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g:alternateSearchPath = 'sfr:../source,sfr:../src,sfr:../include,sfr:../inc'
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This indicates that the corresponding file will be searched for in ../source,
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../src. ../include and ../inc all relative to the current file being switched
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from. The value of the g:alternateSearchPath variable is simply a comma
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separated list of prefixes and directories. The "sfr:" prefix indicates that
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the path is relative to the file. Other prefixes are "wdr:" which indicates
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that the directory is relative to the current working directory and "abs:"
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which indicates the path is absolute. If no prefix is specified "sfr:" is
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assumed.
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c) Regex Paths: Another type of prefix which can appear in the
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g:alternateSearchPath variable is that of "reg:". It is used to apply a regex
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to the path of the file in the buffer being switched from to locate the
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alternate file. E.g. 'reg:/inc/src/g/' will replace every instance of 'inc'
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with 'src' in the source file path. It is possible to use match variables so
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you could do something like: 'reg:|src/\([^/]*\)|inc/\1||' (see |substitute|,
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|help pattern| and |sub-replace-special| for more details. The exact syntax of
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a "reg:" specification is
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reg:<sep><pattern><sep><subst><sep><flag><sep>
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<sep> seperator character, we often use one of [/|%#]
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<pattern> is what you are looking for
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<subst> is the output pattern
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<flag> can be g for global replace or empty
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d) No Alternate Behaviour: When attempting to alternate/switch from a
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source/header to its corresponding file it is possible that the corresponding
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file does not exist. In this case this plugin will create the missing alternate
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file in the same directory as the current file. Some users find this behaviour
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irritating. This behaviour can be disabled by setting
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g:alternateNoDefaultAlternate to 1. When this variable is not 0 a message will
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be displayed indicating that no alternate file exists.
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==============================================================================
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5. Installation *alternate-installation*
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To install this plugin simply drop the a.vim file in to $VIMRUNTIME/plugin
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(global or local) or simply source the file from the vimrc file. Ensure that
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any configuration occurs before the plugin is loaded/sourced.
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==============================================================================
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6. Bugs/Enhancements *alternate-support*
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Whilst no formal support is provided for this plugin the author is always happy
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to receive bug reports and enhancement requests. Please email all such
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reports/requests to feline@irendi.com.
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==============================================================================
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7. Acknowledgments *alternate-acknowledgments*
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The author would like to thank everyone who has submitted bug reports and
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feature enhancement requests in the past. In particular Bindu Wavell provided
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much of the original code implementing the search path and regex functionality.
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vim:tw=78:ts=8:ft=help
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