photobook/scripts/README.md

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`make-images.sh`
================
Generate LaTeX block of pages from a directory tree.
This is initially intended as a means to convert the exported directory
tree from an image viewer where image/text sequencing was done, but it
can also be used standalone.
A typical project tree:
```
book/
├── templates/ . . . . . . . . . . . . Global templates.
│ ├── imagepage.tex . . . . . . . . . Single page image template.
│ ├── textpage.tex . . . . . . . . . Single page text template.
│   │ These are used to build spreads
│   │ when no explicit template matches.
│ ├── blank-image.tex
│ ├── image-blank.tex
│ ├── image-image.tex
│ ├── fullbleed.tex
│ └── ...
├── pages/ . . . . . . . . . . . . . . Main block layout.
│   ├── 00/ . . . . . . . . . . . . . . A basic spread.
│   │   ├── tweaks.tex The spread template is built
│   │   └── 0-DSC02432.jpg automaticall ywith tweaks.tex
│   │   prepended.
│   ├── 01/
│   │   ├── 0-DSC02439.jpg
│   │   └── 1-intro.txt
│   ├── 02/
│   │   ├── fullbleed.tpl . . . . . . . Explicitly use a global template.
│   │   └── 1-DSC02511.jpg
│   ├── 03/
│   │   ├── 0-DSC02509-0.jpg
│   │   └── 1-DSC02506-0.jpg
│   └── ...
├── captions/ . . . . . . . . . . . . . Image captions.
│   ├── DSC02432.txt
│   ├── DSC02439.txt
│   ├── DSC02511.txt
│   └── ...
├── setup.tex . . . . . . . . . . . . . Book block setup.
│ This is included by all top level
│ .tex files like block.tex,
│ cover.tex, ...etc.
├── block.tex . . . . . . . . . . . . . Block skeletal layout.
│ This usually includes the titles,
│ technical pages and sources the
│ ./block-pages.tex.
├── block-pages.tex . . . . . . . . . . The generated block content.
├── cover.tex . . . . . . . . . . . . . Cover layout.
├── jacket.tex . . . . . . . . . . . . Dust jacket layout.
└── ...
```
Generate the block:
```shell
$ make-images.sh ./pages > block-pages.tex
```
Note that `make-images.sh` does not force a specific layout outside of the `pages`
directory, all paths are configurable. The way the root files are structured is
just one way to organize a book's srouce code with minimal code duplication.
The process
-----------
Layout
------
```
pages/
├── <spread>/
│   ├── tweaks.tex
│   ├── layout.tex
│   ├── <template-name>.tpl
│   ├── 00-<image-name>.<ext>
│   ├── 01-<text>.txt
│   └── ...
└── ...
```
Image captions
--------------
In general image captions are decoupled from the main layout to enable
writers and editors to work on them externally.
```
captions/
├── <image-name>.txt
└── ...
```
The captions folder name/location is controlled by the `$CAPTION_DIR`
environment variable.
Inline captions are also supported:
```
pages/
├── <spread>/
│   ├── ...
│   ├── 00-<image-name>.<ext>
│   ├── 00-<image-name>.txt . . . . . . Local image caption
│   └── ...
└── ...
```
An inline caption must have the same filename as the corresponding image
but with a .txt extension.
Templates
---------
```
templates/
├── <template-name>.tex
└── ...
```
Environment variables
---------------------
`cls2tex.sh`
============
Extract the documentation from photobook.cls which is used to build the
photobook.pdf reference manual.