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112 lines
3.1 KiB
Markdown
112 lines
3.1 KiB
Markdown
Prompt
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======
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Loads prompt [themes][1].
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Settings
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--------
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To select a prompt theme, add the following to *zpreztorc*, and replace **name**
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with the name of the theme you wish to load. Setting it to **random** will load
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a random theme.
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zstyle ':prezto:module:prompt' theme 'name'
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Theming
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-------
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A prompt theme is an autoloadable function file with a special name,
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`prompt_name_setup`, placed anywhere in `$fpath`, but for the purpose of this
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project, themes **should** be placed in the *modules/prompt/functions*
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directory.
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### Theme Functions
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There are three theme functions, a setup function, a help function, and
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a preview function. The setup function **must** always be defined. The help
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function and the preview functions are optional.
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#### prompt_name_setup
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This function is called by the `prompt` function to install the theme. This
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function may define other functions as necessary to maintain the prompt,
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including a function that displays help or a function used to preview it.
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**Do not call this function directly.**
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The most basic example of this function can be seen below.
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function prompt_name_setup {
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PROMPT='%m%# '
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RPROMPT=''
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}
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#### prompt_name_help
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If the `prompt_name_setup` function is customizable via parameters, a help
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function **should** be defined. The user will access it via `prompt -h name`.
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The most basic example of this function can be seen below.
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function prompt_name_help {
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cat <<EOH
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This prompt is color-scheme-able. You can invoke it thus:
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prompt theme [<color1>] [<color2>]
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where the color is for the left-hand prompt.
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EOH
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}
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#### prompt_name_preview
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If the `prompt_name_setup` function is customizable via parameters, a preview
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function **should** be defined. The user will access it via `prompt -p name`.
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The most basic example of this function can be seen below.
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function prompt_name_preview {
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if (( $# > 0 )); then
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prompt_preview_theme theme "$@"
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else
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prompt_preview_theme theme red green blue
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print
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prompt_preview_theme theme yellow magenta black
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fi
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}
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### Hook Functions
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There are many Zsh [hook][2] functions, but mostly the *precmd* hook will be
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used.
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#### prompt_name_precmd
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This hook is called before the prompt is displayed and is useful for getting
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information to display in a prompt.
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When calling functions to get information to display in a prompt, do not assume
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that all the dependencies have been loaded. Always check for the availability of
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a function before you calling it.
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**Do not register hook functions. They will be registered by the `prompt` function.**
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The most basic example of this function can be seen below.
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function prompt_name_precmd {
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if (( $+functions[git-info] )); then
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git-info
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fi
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}
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Authors
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-------
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*The authors of this module should be contacted via the [issue tracker][3].*
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- [Sorin Ionescu](https://github.com/sorin-ionescu)
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[1]: http://zsh.sourceforge.net/Doc/Release/User-Contributions.html#Prompt-Themes
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[2]: http://zsh.sourceforge.net/Doc/Release/Functions.html#Hook-Functions
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[3]: https://github.com/sorin-ionescu/prezto/issues
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