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2023-12-29sfeed_update/sfeed_opml_export: only allow regular filesHiltjo Posthuma
Be more strict and only allow regular files. It makes no sense to use device files or fifos with sfeed_update and it can cause issues, because sfeed_update expects to read the config file for each (child) invocation also.
2023-12-27sfeed_update: rename local variables just in caseHiltjo Posthuma
The config is loaded for each child program. These could override these variables if the user specifies the same name.
2023-12-27sfeed_update: remove xargs -sHiltjo Posthuma
Theres no need to specify. POSIX defines it should support at least LINE_MAX (2048 typically). OpenIndiana xargs doesn't conform to POSIX. It doesn't use the largest constraint but errors out. From POSIX: https://pubs.opengroup.org/onlinepubs/9699919799/utilities/xargs.html "Values of size up to at least {LINE_MAX} bytes shall be supported, provided that the constraints specified in the DESCRIPTION are met. It shall not be considered an error if a value larger than that supported by the implementation or exceeding the constraints specified in the DESCRIPTION is given; xargs shall use the largest value it supports within the constraints."
2023-12-27sfeed_update: suppress output to stderr, like merge() already doesHiltjo Posthuma
Noticed while testing TMPDIR=/noaccess sort on Illumos/OpenIndiana, which gives a warning to stderr. For sort temporary directories might be used for large output.
2023-12-26sfeedrc: bump default maxjobs from 8 to 16Hiltjo Posthuma
2023-12-26sfeed_update: use xargs -P -0Hiltjo Posthuma
Some of the options, like -P are as of writing (2023) non-POSIX: https://pubs.opengroup.org/onlinepubs/9699919799/utilities/xargs.html. However many systems support this useful extension for many years now. Some historic context: The xargs -0 option was added on 1996-06-11, about a year after the NetBSD import (over 27 years ago at the time of writing): http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/xargs/xargs.c?rev=1.2&content-type=text/x-cvsweb-markup On OpenBSD the xargs -P option was added on 2003-12-06 by syncing the FreeBSD code: http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/xargs/xargs.c?rev=1.14&content-type=text/x-cvsweb-markup Looking at the imported git history log of GNU findutils (which has xargs), the very first commit already had the -0 and -P option on Sun Feb 4 20:35:16 1996 +0000. Tested on many systems, old and new, some notable: - OpenBSD 7.4 - Void Linux - FreeBSD 12 - NetBSD 9.3 - HaikuOS (uses GNU tools). - Slackware 11 - OpenBSD 3.8 - NetBSD 5.1 Some shells: - oksh - bash - dash - zsh During testing there are some incompatibilities found in parsing the fields so the arguments are passed as one argument which is split later on by the child program.
2023-12-26sfeed_update: mktemp: improve compatibility with older systemsHiltjo Posthuma
Tested on NetBSD 5.1: - mktemp -p doesn't exist there yet. - mktemp without any arguments/template doesnt work - mktemp -d without any arguments/template doesnt work
2023-12-26sfeed_update: disallow using a directory as a config fileHiltjo Posthuma
Tested on NetBSD 5.1: evaluating directories as config files could allow garbage, so disallow it. Devices / fifo, etc are still allowed.
2023-12-15sfeed_update: add die() function for exit and cleanup, respect $TMPDIRHiltjo Posthuma
- Add a die() helper function to cleanup and exit. - NOTE that with an empty sfeedtmpdir the case rm -rf "" is fine. - Respect $TMPDIR for creating temporary files like many UNIX tools do. - Fix: when creating "${sfeedtmpdir}/ok" fails for some reason cleanup the whole temporary directory as well. - Fix: when the feeds() function is not defined exit with status code 1 (this was incorrectly status code 0). Reproduce: sfeed_update /dev/null; echo $?
2023-12-09improve compatibility with zsh as a non-interactive shellHiltjo Posthuma
In zsh the variables $path and $status are special. https://zsh.sourceforge.io/Doc/Release/Parameters.html#index-path https://zsh.sourceforge.io/Doc/Release/Parameters.html#index-status (No promises I will keep up with this insanity in the future though)
2023-06-09sfeed_update/sfeedrc: add url as parameter to the filter() and order() functionHiltjo Posthuma
This might make it easier to set filters or ordering by pattern matching on a group of feeds by the feed URL. For example youtube or reddit feeds. Another way which was already possible is prefixing names with for example: "reddit somename" or "yt somename".
2023-04-05sfeed_update: fail early if creating a temporary directory or status file failsHiltjo Posthuma
If creating a temporary directory for the feed files failed then $sfeedtmpdir would be empty and it would try to: mkdir -p "/feed" touch "/feed/ok" After failing it would also still try to process all the feeds. Now just fail early. mktemp or touch themselve will print the actual error to stderr.
2023-02-17sfeed_update, sfeed_opml_export, README: reference the example sfeedrc man pageHiltjo Posthuma
... and some small rewording.
2022-06-21fix some typisNRK
found via codespell $ codespell --ignore-regex Nd
2022-03-28sfeed_update: change return to exit in mainHiltjo Posthuma
Pedantic change: Make main more consistent since other functions in it exit too and main is not supposed to return or used like that.
2022-03-25change echo to printf and for sfeed_opml_export use a control-character ↵Hiltjo Posthuma
separator echo is unportable in this way and names containing characters like an option (-n) or backslash or escape codes (\e, \n, etc) could be messy. For awk set LC_ALL=C for simple collation. This makes sfeed_opml_export slower in some shells that don't have printf builtin though. For example with about 150 feeds in a config file it is a bit slower on OpenBSD ksh. time ./sfeed_opml_export | wc -l 152 0m00.29s real 0m00.05s user 0m00.20s system time sfeed_opml_export | wc -l 152 0m00.02s real 0m00.00s user 0m00.03s system
2022-03-23shellscripts: use [ for test consistentlyHiltjo Posthuma
2022-03-22sfeed_update: return status in _feed() functionHiltjo Posthuma
This can be useful for scripts, for example the sfeed_update_xargs example script in the README. This way the process can signal an error and xargs will exit with the code 123: "One or more invocations of utility returned a nonzero exit status."
2022-03-21sfeed_update: set exit status non-zero if any of the feeds failedHiltjo Posthuma
In practise this may change the meaning of the examples: sfeed_update && pkill -SIGHUP sfeed_curses An alternative: sfeed_update; pkill -SIGHUP sfeed_curses
2022-03-21sfeed_update: log FAILs to stderrTommy Nguyen
2021-05-27sfeed_update: fix message when the configuration file does not existHiltjo Posthuma
When sfeed_update was called without using a parameter and it used the default and this path did not exist it would incorrectly print: Configuration file "" does not exist or is not readable. See sfeedrc.example for an example. Make the error message a bit shorter too. This was a partial regression of commit df74ba274c4ea5d9b7388c33500ba601ed0c991d
2021-03-03sfeed_update: return instead of exit in main() on successHiltjo Posthuma
This is useful so the script can be included, call main and then have additional post-main functionality.
2021-03-01sfeed_update: fix baseurl substitutionHiltjo Posthuma
Follow-up from a rushed commit: commit 58555779d123be68c0acf9ea898931d656ec6d63 Author: Hiltjo Posthuma <hiltjo@codemadness.org> Date: Sun Feb 28 13:33:21 2021 +0100 sfeed_update: simplify, use feedurl directly This also make it possible to use non-authoritive URLs as a baseurl, like "magnet:" URLs.
2021-03-01sfeed_update: simplify, use feedurl directlyHiltjo Posthuma
This also make it possible to use non-authoritive URLs as a baseurl, like "magnet:" URLs.
2021-02-05sfeed_update: $SFEED_UPDATE_INCLUDE: be a bit more precise/pedanticHiltjo Posthuma
2021-01-27sfeed_update: $SFEED_UPDATE_INCLUDE: be a bit more precise/pedanticHiltjo Posthuma
2021-01-27sfeed_update: allow to reuse the code more easily as an included scriptHiltjo Posthuma
This adds a main() function. When the environment variable $SFEED_UPDATE_INCLUDE is set then it will not execute the main handler. The other functions are included and can be reused. This is also useful for unit-testing.
2021-01-27sfeed_update: separate code of parallel exection and feed() into a _feed() ↵Hiltjo Posthuma
handler This is useful to be able to reuse the code (together with using sfeed_update as an included script, coming in the next commit).
2021-01-27sfeed_update: shuffle code getting the path of the feedurl to make the ↵Hiltjo Posthuma
basesiteurl Move it closer before it is used.
2021-01-27sfeed_update: change parse failure error messageHiltjo Posthuma
"(FAIL CONVERT)" -> "(FAIL PARSE)". Convert may be too similar to text encoding conversion.
2021-01-27sfeed_update: add an overridable parse() function, using sfeed(1) by defaultHiltjo Posthuma
This can be useful to make more cleanly make connector scripts. This does not necesarily even have to be in the sfeed(5) format.
2021-01-24sfeed_update: print the filename again as passed as a parameterHiltjo Posthuma
... and do not show stderr of readlink.
2021-01-16sfeed_update: typo in commentHiltjo Posthuma
2021-01-16sfeed_update: improve consistency of feed creation and mergingHiltjo Posthuma
- Improve feed creation with empty results and new feed files. Always make sure the file is created even when it is new and there are also no items (after filtering). - Consistency: always use the same feed file for merging. Do not use "/dev/null" when it is a new file. This works using sort, but is ugly when the merge() function is overridden and does something else. It should be the feed file always.
2021-01-16sfeed_update: make convertencoding() consistent with other overridable functionsHiltjo Posthuma
This adds the name as the first parameter for the convertencoding() function, like filter, merge, order, etc. This can be useful to make an exception rule for text decoding in a more clean way.
2021-01-01sfeed_update: if baseurl is empty then use the path from the feed by defaultHiltjo Posthuma
Feeds should contain absolute urls, but if it does not have it then this makes it more convenient to configure such feeds.
2020-02-23sfeed_update: don't preserve permissions of tmp files by moving, so copyHiltjo Posthuma
noticed on DragonFlyBSD where it prints a warning when moving the file from /tmp. To reproduce it: touch /tmp/file mv /tmp/file ~/ On other systems this would not print a warning, but it would preserve the group permissions etc.
2020-02-04sfeed_update: tiny style fix in commentHiltjo Posthuma
2019-06-11sfeed_update: clarify a comment about being non-optimalHiltjo Posthuma
2019-05-15README and sfeed_update: use names (order vs sort) and in the execution orderHiltjo Posthuma
2019-05-12sfeed_update: cleanup proper encoding file (if any)Hiltjo Posthuma
2019-05-02sfeed_update: disable If-Modified-Since by defaultHiltjo Posthuma
2019-04-14sfeed_update: fix typo in commentHiltjo Posthuma
2019-04-14sfeed_update: rename fetchfeed to fetchHiltjo Posthuma
... and simplify example in README.
2019-04-14sfeed_update improvementsHiltjo Posthuma
- Better checking and verbose logging (on failure) of each stage: fetchfeed, filter, merge, order, convertencoding. This makes sure on out-of-memory, disk-space or other resource limits the output is not corrupted. - This also has the added advantage it runs less processes (piped) at the same time. - Clear previous unneeded file to preserve space in /tmp (/tmp is often mounted as mfs/tmpfs). - Add logging function (able to override), use more logical logging format (pun intended). - Code-style: order overridable functions in execution order.
2019-03-01sfeed_update: remove wrong/incomplete commentHiltjo Posthuma
2018-10-24sfeed_update: fix wrong comment "temporary file" -> "temporary directory"Hiltjo Posthuma
2018-10-24Revert "sfeed_update: replace non-POSIX mktemp with $$"Hiltjo Posthuma
This reverts commit 8699fa2bb4c75670952fee503a58ca4a652627eb. There is a regression in directory permissions among other things.
2018-10-11sfeed_update: replace non-POSIX mktemp with $$Hiltjo Posthuma
+ fix wrong comment "temporary file" -> "temporary directory".
2018-10-06sfeed_update: handle signals consistently in different shellsHiltjo Posthuma
- Handle SIGTERM properly, don't leave stray processes. Kill them on both SIGTERM and SIGINT. - When a "batch" of feeds was interrupted, don't allow to wait again. - Simplify and create sighandler function. - Now on both SIGTERM and SIGINT the cleanup() handler is called to not leave stray files. Tested with ksh, dash, bash, zsh.
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