X-Git-Url: https://git.ladys.computer/Shushe/blobdiff_plain/3dc36d1f23aff7cb60b498d88e503b619a7bc543..6079f3b65efdd3ccc75c3959c907b1ed989a63ef:/README.markdown diff --git a/README.markdown b/README.markdown index 643a4d8..e5a24ed 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 @@ -75,7 +163,7 @@ Compilation involves the following steps :⁠— 6. ⛩️📰 书社 compiles each output file to `build/result`. -7. ⛩️📰 书社 symlinks most output files from `build/result` to +7. ⛩️📰 书社 copies most output files from `build/result` to `build/public`, but it does some additional processing instead on those which indicate a non‐X·M·L desired final output form. @@ -114,29 +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` - `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`) @@ -194,6 +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 @@ -225,8 +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 @@ -236,6 +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). @@ -268,11 +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 @@ -359,23 +464,27 @@ It is **strongly recommended** that auxillary templates in parsers be ### Attributes added during parsing -⛩️📰 书社 will add a few attributes to the output of the parsing step, - namely :⁠— +⛩️📰 书社 will add a few attributes to elements which result from + parsing plaintext `` elements. +These include :⁠— -- A `@书社:cksum` attribute on toplevel result elements, giving the - `cksum` checksum of the corresponding source file. +- A `@书社:parsed-by` attribute, giving a space‐separated list of + parsers which parsed the node. + (Generally, this will be a list of one, but it is possible for the + result of a parse to be another plaintext node, which may be parsed + by a different parser.) -- For the elements which result from parsing plaintext `` - elements :⁠— +- A `@书社:media-type` attribute, giving the identified media type of + the plaintext node. - - A `@书社:parsed-by` attribute, giving a space‐separated list of - parsers which parsed the node. - (Generally, this will be a list of one, but it is possible for the - result of a parse to be another plaintext node, which may be - parsed by a different parser.) +## Output Redirection - - A `@书社:media-type` attribute, giving the identified media type of - the plaintext node. +By default, ⛩️📰 书社 installs files to the same location in `DESTDIR` + as they were placed in their `SRCDIR`. +This behaviour can be customized by setting the `@书社:destination` + attribute on the root element, whose value can give a different path. +This attribute is read after parsing, but before transformation (where + it is silently dropped). ## Embedding @@ -402,14 +511,30 @@ Embedding takes place after parsing but before transformation, so and update them accordingly; it will signal an error if the dependencies are recursive. -## Output Redirection +### Attributes added during expansion -By default, ⛩️📰 书社 installs files to the same location in `DESTDIR` - as they were placed in their `SRCDIR`. -This behaviour can be customized by setting the `@书社:destination` - attribute on the root element, whose value can give a different path. -This attribute is read after parsing, but before transformation (where - it is silently dropped). +⛩️📰 书社 will add a few attributes to toplevel result elements, both + in the main document and any embedded documents, during the expansion + phase prior to the main transformation. +These include :⁠— + +- A `@书社:cksum` attribute giving the `cksum` checksum of the + corresponding source file. + +- A `@书社:mtime` attribute giving the last modified time of the + corresponding source file. + +- A `@书社:identifier` attribute giving the ⛩️📰 书社 identifier + (i·e, starting with `about:shushe?`) of the corresponding source + file. + +- For elements in the `html` namespace, an `itemscope` attribute and an + `itemtype` attribute with a value of + `urn:fdc:ladys.computer:20231231:Shu1She4:document` (for the main + document) or `urn:fdc:ladys.computer:20231231:Shu1She4:embed` (for + embedded documents). + These attributes are used to scope any nested `` elements + with `@itemprop` attributes to their containing documents. ## Transforms @@ -459,6 +584,10 @@ Transforms are used to convert X·M·L files into their final output, It is not possible to selectively only declare one prefix for a name·space to the exclusion of others. + `<书社:raw-output>` elements may be used inside of + `<书社:serialize-xml>` elements to inject raw output into the + serialized X·M·L. + The following are recommendations on effective creation of transforms :⁠— @@ -479,9 +608,6 @@ The following params are made available globally in parsers and - **`BUILDTIME`:** The current time. -- **`CKSUM`:** - The checksum of the source file (⅌ `cksum`). - - **`IDENTIFIER`:** The ⛩️📰 书社 identifier of the source file (a u·r·i beginning with `about:shushe`). @@ -489,17 +615,11 @@ The following params are made available globally in parsers and - **`SRCREV`:** The value of the `SRCREV` variable (if present). -- **`SRCTIME`:** - The time at which the source file was last modified. - - **`THISREV`:** The value of the `THISREV` variable (if present). The following params are only available in transforms :⁠— -- **`CATALOG`:** - The path of the catalog file (within `BUILDDIR`). - - **`PATH`:** The path of the output file (within `DESTDIR`). @@ -596,6 +716,13 @@ 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 @@ -614,3 +741,4 @@ Most source files are licensed under the terms of the Mozilla [REUSE]: [draft-phillips-record-jar-01]: +[rdar-92753335]: