30 lines
1.2 KiB
Markdown
30 lines
1.2 KiB
Markdown
# Fancy Index module Hacking HOW-TO
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## How to modify the template
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The template is in the `template.html` file. Note that comment markers are
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used to control how the `template.awk` Awk script generates the C header
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which gets ultimately included in the compiled object code. Comment markers
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have the `<!-- var identifier -->` format. Here `identifier` must be
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a valid C identifier. All the text following the marker until the next
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marker will be flattened into a C string.
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If the identifier is `NONE` (capitalized) the text from that marker up to
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the next marker will be discarded.
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## Regenerating the C header
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You will need Awk. I hope any decent implementation will do, but the GNU one
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is known to work flawlessly. Just do:
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$ awk -f template.awk template.html > template.h
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If your copy of `awk` is not the GNU implementation, you will need to
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install it and use `gawk` instead in the command line above.
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This includes macOS where the current built-in `awk` (currently version
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20070501 at time of testing on 10.13.6) doesn't apply correctly and causes
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characters to be omitted from the output. `gawk` can be installed with a
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package manager such as [Homebrew](https://brew.sh) or
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[MacPorts](https://ports.macports.org/port/gawk).
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