X-Git-Url: https://git.ladys.computer/Shushe/blobdiff_plain/ccef2f2a2243cf086b165562cb73defa14f34f62..3a299f48959110fd4f621d75378129d96e4ad631:/README.markdown diff --git a/README.markdown b/README.markdown index 5457ce7..040d564 100644 --- a/README.markdown +++ b/README.markdown @@ -21,16 +21,12 @@ It makes things easier by :⁠— - Enabling easy inclusion of source files within each other. It aims to do this with zero dependencies beyond the programs already - installed on your computer. -(On Linux machines, you may need to install `libxml2-utils` to get the - commandline programs from `libxml2`.) + installed on your computer†. -**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, Macintosh ≥ version 10.8). +In fact, on Linux you will probably need to install a few programs: + `libxml2-utils`, `xsltproc`, `sharutils`, and `pax`. ## Nomenclature @@ -52,6 +48,98 @@ 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 (`POSIX.1-2001`) 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. + +### `diff` + +This is a Posix utility, but ⛩️📰 书社 depends on functionality + introduced after `POSIX.1-2001` (the `-u` option, introduced in + `POSIX.1-2008`). +Macintosh systems somewhat interestingly implement this option + correctly in legacy mode (`COMMAND_MODE=legacy`) but incorrectly by + default (despite claiming `POSIX.1-2008` conformance for this + utility). +[Note this erroneous comment claiming nanosecond & timezone are + extensions rather than standardized.][rdar-92753335] +Despite this, the default Macintosh implementation will still work with + ⛩️📰 书社, with the caveat that the timestamp will only include a + fractional component when a Posix⹀compliant (e·g, Macintosh legacy or + G·N·U) implementation is used. + +### `file` + +This is a Posix utility, but it was considered optional in + `POSIX.1-2001` (altho it was made mandatory in `POSIX.1-2008`) and + ⛩️📰 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 it is considered an optional Software + Development utility and ⛩️📰 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 it is not included in the Linux Standard + Base or installed by default in many distributions. +⛩️📰 书社 only requires support for the `ustar` format. + +### `uudecode` and `uuencode` + +These are Posix utilities, but they were considered optional in + `POSIX.1-2001` (altho they are made mandatory in `POSIX.1-2008`) and + they are 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 + provides one implementation. + +### `xmlcatalog` and `xmllint` + +These are not a Posix utilities. +They are a part of `libxml2`, but may need to be installed separately + on some platforms (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 on + some platforms. + ## Basic Usage Place source files in `sources/` and run `make install` to compile @@ -114,30 +202,30 @@ In every case, you may supply your own implementation by overriding the - `awk` - `cat` +- `cd` - `cksum` - `cp` - `date` -- `echo` +- `diff` - `file` - `find` - `git` (optional; set `GIT=` to disable) - `grep` - `ln` -- `mkdir` (requires support for `-p`) +- `mkdir` - `mv` -- `od` (requires support for `-t x1`) +- `od` - `pax` (only when generating archives) - `printf` - `rm` - `sed` - `sleep` -- `stat` (BSD *or* GNU) - `test` - `touch` -- `tr` (requires support for `-d`) -- `uuencode` (requires support for `-m` and `-r`) -- `uudecode` (requires support for `-m` and `-r`) -- `xargs` (requires support for `-0`) +- `tr` +- `uuencode` +- `uudecode` +- `xargs` - `xmlcatalog` (provided by `libxml2`) - `xmllint` (provided by `libxml2`) - `xsltproc` (provided by `libxslt`) @@ -195,6 +283,8 @@ The following additional variables can be used to control the behaviour those which end with a cloparen, and those which contain a hash, buck, percent, asterisk, colon, semi, eroteme, bracket, backslash, or pipe. + It is important that these rules not produce any output, as anything + printed to `stdout` will be considered a result of the find. - **`EXTRAFINDRULES`:** The value of this variable is appended to `FINDRULES` by default, to @@ -226,8 +316,13 @@ The following additional variables can be used to control the behaviour enable additional transforms without overriding the existing ones. - **`XMLTYPES`:** - A white·space‐separated list of media types to consider X·M·L - (default: `application/xml text/xml`). + A white·space‐separated list of media types or media type suffixes to + consider X·M·L (default: `application/xml text/xml +xml`). + +- **`FINALIZE`:** + A program to run on (unspecial) X·M·L files after they are + transformed (default: `xmllint --nonet --nsclean`). + This variable can be used for postprocessing. - **`THISREV`:** The current version of ⛩️📰 书社 (default: derived from the current @@ -237,6 +332,15 @@ The following additional variables can be used to control the behaviour The current version of the source files (default: derived from the current git tag/branch/commit). +- **`QUIET`:** + If this variable has a value, informative messages will not be + printed (default: empty). + Informative messages print to stderr, not stdout, so disabling them + usually shouldn’t be necessary. + This does not (cannot) disable messages from Make itself, for which + the `-s`, `--silent` ∕ `--quiet` Make option is more likely to be + useful. + - **`VERBOSE`:** If this variable has a value, every recipe instruction will be printed when it runs (default: empty). @@ -269,11 +373,11 @@ Source files whose media type does not have an associated X·S·L·T 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 @@ -601,6 +705,13 @@ 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 @@ -619,3 +730,4 @@ Most source files are licensed under the terms of the Mozilla [REUSE]: [draft-phillips-record-jar-01]: +[rdar-92753335]: