X-Git-Url: https://git.ladys.computer/Shushe/blobdiff_plain/6773582e45aab385c96638fe9e90d811132a1005..b620a662b669862cd7bf01aa06c8ad3de2f1a7f4:/README.markdown diff --git a/README.markdown b/README.markdown index 9523a8a..952f4ee 100644 --- a/README.markdown +++ b/README.markdown @@ -23,26 +23,10 @@ It makes things easier by :⁠— It aims to do this with zero dependencies beyond the programs already installed on your computer†. -† The only non‐Posix programs‡ required (other than G·N·U Make itself, - and optionally Git) are those provided by `libxml2` and `libxslt`. -On most operating systems, these libraries come pre·installed, but on - Linux machines the commandline utilities are often packaged - separately (as **`libxml2-utils`** and **`xsltproc`**), which may - still need to be installed. -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 with other implementations - of Make. +† 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 @@ -64,6 +48,77 @@ The name 书社 was chosen to play on this pun, as 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 @@ -129,7 +184,6 @@ In every case, you may supply your own implementation by overriding the - `cksum` - `cp` - `date` -- `echo` - `file` - `find` - `git` (optional; set `GIT=` to disable) @@ -144,13 +198,12 @@ In every case, you may supply your own implementation by overriding the - `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`) @@ -511,6 +564,10 @@ The following params are made available globally in parsers and - **`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). @@ -616,6 +673,13 @@ They are :⁠— 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