It aims to do this with zero dependencies beyond the programs already
installed on your computer†.
-† The only non‐Posix programs‡ required are those provided by `libxml2`
- and `libxslt` (which most operating systems provide), but on Linux
- machines the commandline utilities may need to be installed
- separately as **`libxml2-utils`** and **`xsltproc`**.
-Additionally, not all Linux distributions bundle all necessary Posix
- programs; on Debian (for example) you may need to separately install
- **`sharutils`** for `uudecode` and `uuencode` and **`pax`** for
- archiving.
-
-‡ This make·file also currently depends on non‐Posix `stat` but
- attempts to handle both the G·N·U and B·S·D variants.
-It expects `xargs` to accept a `-0` option, which, while widely
- supported, is not a part of the Posix standard.
-
-**Note:**
-⛩️📰 书社 requires functionality present in G·N·U Make 3.81 (or later)
- and will not work in previous versions, or other implementations of
- Make.
-Compatibility with later versions of G·N·U Make is assumed, but not
- tested.
+† Assuming an operating system with a fairly featureful, and
+ Posix‐compliant, development setup (e·g, macOS).
+In fact, on Linux you will probably need to install a few programs:
+ `libxml2-utils`, `xsltproc`, `sharutils`, and `pax`.
## Nomenclature
In Ascii environments, ⛩️📰 书社 should be written `Shushe`, following
the pinyin transliteration.
+## Prerequisites
+
+In most cases, ⛩️📰 书社 aims to require only functionality which is
+ present in all Posix‐compliant operating systems.
+There are a few exceptions.
+Details on particular programs are given below; if a program is not
+ listed, it is assumed that any Posix‐compliant implementation will
+ work.
+
+### `file`
+
+This is a Posix utility, but ⛩️📰 书社 currently depends on
+ unspecified behaviour.
+It requires support for the following additional options :—
+
+- **`-C`**, when supplied with `-m`, must be useable to compile a
+ `.mgc` magicfile for use with future invocations of `file`.
+
+- **`--files-from`** must be useable to provide a file that `file`
+ should read file·names from, and `-` must be useable in this
+ context to specify the standard input.
+
+- **`--mime-type`** must cause `file` to print the internet media type
+ of the file with no charset parameter.
+
+- **`--separator`** must be useable to set the separator that `file`
+ uses to separate file names from types.
+
+These options are implemented by the
+ [Fine Free File Command](https://darwinsys.com/file/), which is used
+ by most operating systems.
+
+### `git`
+
+This is not a Posix utility.
+Usage of `git` is optional, but recommended (and activated by default).
+To disable it, set `GIT=`.
+
+### `make`
+
+This is a Posix utility, but ⛩️📰 书社 currently depends on
+ unspecified behaviour.
+⛩️📰 书社 requires specifically the G·N·U version of `make`, and
+ depends on functionality present in version 3.81 or later.
+It is not expected to work in previous versions, or with other
+ implementations of Make.
+
+### `pax`
+
+This is a Posix utility, but not included in the Linux Standard Base or
+ installed by default in many distributions.
+Only `ustar` format support is required.
+
+### `uudecode` and `uuencode`
+
+These are Posix utilities, but not included in the Linux Standard Base
+ or installed by default in many distributions.
+The G·N·U [Sharutils](https://www.gnu.org/software/sharutils/) package
+ can be installed to access them.
+
+### `xmlcatalog` and `xmllint`
+
+These are not a Posix utilities.
+They is a part of `libxml2`, but may need to be installed separately
+ (e·g by the name `libxml2-utils`).
+
+### `xsltproc`
+
+This is not a Posix utility.
+It is a part of `libxslt`, but may need to be installed separately.
+
## Basic Usage
Place source files in `sources/` and run `make install` to compile
- `cksum`
- `cp`
- `date`
-- `echo`
- `file`
- `find`
- `git` (optional; set `GIT=` to disable)
- `grep`
- `ln`
+- `ls`
- `mkdir`
- `mv`
- `od`
- `rm`
- `sed`
- `sleep`
-- `stat` (BSD *or* GNU)
- `test`
- `touch`
- `tr`
- `uuencode`
- `uudecode`
-- `xargs` (requires support for `-0`)
+- `xargs`
- `xmlcatalog` (provided by `libxml2`)
- `xmllint` (provided by `libxml2`)
- `xsltproc` (provided by `libxslt`)
contain Ascii white·space, colons (`:`), semis (`;`), pipes (`|`),
bucks (`$`), percents (`%`), hashes (`#`), asterisks (`*`), brackets
(`[` or `]`), erotemes (`?`), backslashes (`\`), or control
- characters, must not begin with a hyphen‐minus (`-`), and must not
- end with a cloparen (`)`).**
+ characters, must not begin with a hyphen‐minus (`-`), and must not end
+ with a cloparen (`)`).**
The former characters have the potential to conflict with make syntax,
- a leading hyphen‐minus is confusable for a command‐line argument, and
- a trailing cloparen [activates a bug in G·N·U Make
+ a leading hyphen‐minus is confusable for a commandline argument, and a
+ trailing cloparen [activates a bug in G·N·U Make
3.81](https://stackoverflow.com/questions/17148468/capturing-filenames-including-parentheses-with-gnu-makes-wildcard-function#comment24825307_17148894).
## Parsers
- **`SRCTIME`:**
The time at which the source file was last modified.
+ Due to limitations in Posix, this time will only have minute
+ precision if the file was modified in the last six months, and will
+ only have day precision if the file is older.
+ Users should not expect this value to be particularly stable.
- **`THISREV`:**
The value of the `THISREV` variable (if present).
non X·M·L output types, ⁊·c).
Other child elements will be ignored.
+ If the `<书社:archive>` element is given an `@书社:expanded`
+ attribute, rather than producing a tarball ⛩️📰 书社 will output
+ the directory which expanding the tarball would produce.
+ This mechanism can be used to generate multiple files from a single
+ source, provided all of the files are contained with·in the same
+ directory.
+
- **`<书社:base64-binary>`:**
The text nodes in the transformation result will, after removing all
Ascii whitespace, be treated as a Base·64 string, which is then
Lady’s Gitweb / Shushe / blobdiff