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googlers / jrn / git / d64ea0f83bd7e676778f833c57f969a94518a28d
commitd64ea0f83bd7e676778f833c57f969a94518a28d[log] [tgz]
authorJeff King <peff@peff.net>Mon Jan 12 20:57:37 2015 -0500
committerJunio C Hamano <gitster@pobox.com>Tue Jan 13 10:03:30 2015 -0800
treea823ee7016046bdd3f6d2d9454b6a07260f28182
parent1da1e07c835e900337714cfad6c32a8dc0b36ac3 [diff]
git-compat-util: add xstrdup_or_null helper

It's a common idiom to duplicate a string if it is non-NULL,
or pass a literal NULL through. This is already a one-liner
in C, but you do have to repeat the name of the string
twice. So if there's a function call, you must write:

  const char *x = some_fun(...);
  return x ? xstrdup(x) : NULL;

instead of (with this patch) just:

  return xstrdup_or_null(some_fun(...));

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
1 file changed
tree: a823ee7016046bdd3f6d2d9454b6a07260f28182
  1. block-sha1/
  2. builtin/
  3. compat/
  4. contrib/
  5. Documentation/
  6. ewah/
  7. git-gui/
  8. gitk-git/
  9. gitweb/
  10. mergetools/
  11. perl/
  12. po/
  13. ppc/
  14. t/
  15. templates/
  16. vcs-svn/
  17. xdiff/
  18. RelNotes ⇨ Documentation/RelNotes/2.2.0.txt
  19. .gitattributes
  20. .gitignore
  21. .mailmap
  22. abspath.c
  23. aclocal.m4
  24. advice.c
  25. advice.h
  26. alias.c
  27. alloc.c
  28. archive-tar.c
  29. archive-zip.c
  30. archive.c
  31. archive.h
  32. argv-array.c
  33. argv-array.h
  34. attr.c
  35. attr.h
  36. base85.c
  37. bisect.c
  38. bisect.h
  39. blob.c
  40. blob.h
  41. branch.c
  42. branch.h
  43. builtin.h
  44. bulk-checkin.c
  45. bulk-checkin.h
  46. bundle.c
  47. bundle.h
  48. cache-tree.c
  49. cache-tree.h
  50. cache.h
  51. check-builtins.sh
  52. check-racy.c
  53. check_bindir
  54. color.c
  55. color.h
  56. column.c
  57. column.h
  58. combine-diff.c
  59. command-list.txt
  60. commit-slab.h
  61. commit.c
  62. commit.h
  63. config.c
  64. config.mak.in
  65. config.mak.uname
  66. configure.ac
  67. connect.c
  68. connect.h
  69. connected.c
  70. connected.h
  71. convert.c
  72. convert.h
  73. copy.c
  74. COPYING
  75. credential-cache--daemon.c
  76. credential-cache.c
  77. credential-store.c
  78. credential.c
  79. credential.h
  80. csum-file.c
  81. csum-file.h
  82. ctype.c
  83. daemon.c
  84. date.c
  85. decorate.c
  86. decorate.h
  87. delta.h
  88. diff-delta.c
  89. diff-lib.c
  90. diff-no-index.c
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  92. diff.h
  93. diffcore-break.c
  94. diffcore-delta.c
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  96. diffcore-pickaxe.c
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  98. diffcore.h
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  100. dir.h
  101. editor.c
  102. entry.c
  103. environment.c
  104. exec_cmd.c
  105. exec_cmd.h
  106. fast-import.c
  107. fetch-pack.c
  108. fetch-pack.h
  109. fmt-merge-msg.h
  110. fsck.c
  111. fsck.h
  112. generate-cmdlist.sh
  113. gettext.c
  114. gettext.h
  115. git-add--interactive.perl
  116. git-am.sh
  117. git-archimport.perl
  118. git-bisect.sh
  119. git-compat-util.h
  120. git-cvsexportcommit.perl
  121. git-cvsimport.perl
  122. git-cvsserver.perl
  123. git-difftool--helper.sh
  124. git-difftool.perl
  125. git-filter-branch.sh
  126. git-instaweb.sh
  127. git-merge-octopus.sh
  128. git-merge-one-file.sh
  129. git-merge-resolve.sh
  130. git-mergetool--lib.sh
  131. git-mergetool.sh
  132. git-p4.py
  133. git-parse-remote.sh
  134. git-pull.sh
  135. git-quiltimport.sh
  136. git-rebase--am.sh
  137. git-rebase--interactive.sh
  138. git-rebase--merge.sh
  139. git-rebase.sh
  140. git-relink.perl
  141. git-remote-testgit.sh
  142. git-request-pull.sh
  143. git-send-email.perl
  144. git-sh-i18n.sh
  145. git-sh-setup.sh
  146. git-stash.sh
  147. git-submodule.sh
  148. git-svn.perl
  149. GIT-VERSION-GEN
  150. git-web--browse.sh
  151. git.c
  152. git.rc
  153. git.spec.in
  154. gpg-interface.c
  155. gpg-interface.h
  156. graph.c
  157. graph.h
  158. grep.c
  159. grep.h
  160. hashmap.c
  161. hashmap.h
  162. help.c
  163. help.h
  164. hex.c
  165. http-backend.c
  166. http-fetch.c
  167. http-push.c
  168. http-walker.c
  169. http.c
  170. http.h
  171. ident.c
  172. imap-send.c
  173. INSTALL
  174. khash.h
  175. kwset.c
  176. kwset.h
  177. levenshtein.c
  178. levenshtein.h
  179. LGPL-2.1
  180. line-log.c
  181. line-log.h
  182. line-range.c
  183. line-range.h
  184. list-objects.c
  185. list-objects.h
  186. ll-merge.c
  187. ll-merge.h
  188. lockfile.c
  189. log-tree.c
  190. log-tree.h
  191. mailmap.c
  192. mailmap.h
  193. Makefile
  194. match-trees.c
  195. merge-blobs.c
  196. merge-blobs.h
  197. merge-recursive.c
  198. merge-recursive.h
  199. merge.c
  200. mergesort.c
  201. mergesort.h
  202. name-hash.c
  203. notes-cache.c
  204. notes-cache.h
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  206. notes-merge.h
  207. notes-utils.c
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  209. notes.c
  210. notes.h
  211. object.c
  212. object.h
  213. pack-bitmap-write.c
  214. pack-bitmap.c
  215. pack-bitmap.h
  216. pack-check.c
  217. pack-objects.c
  218. pack-objects.h
  219. pack-revindex.c
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  221. pack-write.c
  222. pack.h
  223. pager.c
  224. parse-options-cb.c
  225. parse-options.c
  226. parse-options.h
  227. patch-delta.c
  228. patch-ids.c
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  230. path.c
  231. pathspec.c
  232. pathspec.h
  233. pkt-line.c
  234. pkt-line.h
  235. preload-index.c
  236. pretty.c
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  239. progress.c
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  241. prompt.c
  242. prompt.h
  243. quote.c
  244. quote.h
  245. reachable.c
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  247. read-cache.c
  248. README
  249. reflog-walk.c
  250. reflog-walk.h
  251. refs.c
  252. refs.h
  253. remote-curl.c
  254. remote-testsvn.c
  255. remote.c
  256. remote.h
  257. replace_object.c
  258. rerere.c
  259. rerere.h
  260. resolve-undo.c
  261. resolve-undo.h
  262. revision.c
  263. revision.h
  264. run-command.c
  265. run-command.h
  266. send-pack.c
  267. send-pack.h
  268. sequencer.c
  269. sequencer.h
  270. server-info.c
  271. setup.c
  272. sh-i18n--envsubst.c
  273. sha1-array.c
  274. sha1-array.h
  275. sha1-lookup.c
  276. sha1-lookup.h
  277. sha1_file.c
  278. sha1_name.c
  279. shallow.c
  280. shell.c
  281. shortlog.h
  282. show-index.c
  283. sideband.c
  284. sideband.h
  285. sigchain.c
  286. sigchain.h
  287. split-index.c
  288. split-index.h
  289. strbuf.c
  290. strbuf.h
  291. streaming.c
  292. streaming.h
  293. string-list.c
  294. string-list.h
  295. submodule.c
  296. submodule.h
  297. symlinks.c
  298. tag.c
  299. tag.h
  300. tar.h
  301. test-chmtime.c
  302. test-config.c
  303. test-ctype.c
  304. test-date.c
  305. test-delta.c
  306. test-dump-cache-tree.c
  307. test-dump-split-index.c
  308. test-genrandom.c
  309. test-hashmap.c
  310. test-index-version.c
  311. test-line-buffer.c
  312. test-match-trees.c
  313. test-mergesort.c
  314. test-mktemp.c
  315. test-parse-options.c
  316. test-path-utils.c
  317. test-prio-queue.c
  318. test-read-cache.c
  319. test-regex.c
  320. test-revision-walking.c
  321. test-run-command.c
  322. test-scrap-cache-tree.c
  323. test-sha1.c
  324. test-sha1.sh
  325. test-sigchain.c
  326. test-string-list.c
  327. test-subprocess.c
  328. test-svn-fe.c
  329. test-urlmatch-normalization.c
  330. test-wildmatch.c
  331. thread-utils.c
  332. thread-utils.h
  333. trace.c
  334. trace.h
  335. transport-helper.c
  336. transport.c
  337. transport.h
  338. tree-diff.c
  339. tree-walk.c
  340. tree-walk.h
  341. tree.c
  342. tree.h
  343. unicode_width.h
  344. unimplemented.sh
  345. unix-socket.c
  346. unix-socket.h
  347. unpack-trees.c
  348. unpack-trees.h
  349. update_unicode.sh
  350. upload-pack.c
  351. url.c
  352. url.h
  353. urlmatch.c
  354. urlmatch.h
  355. usage.c
  356. userdiff.c
  357. userdiff.h
  358. utf8.c
  359. utf8.h
  360. varint.c
  361. varint.h
  362. version.c
  363. version.h
  364. versioncmp.c
  365. walker.c
  366. walker.h
  367. wildmatch.c
  368. wildmatch.h
  369. wrap-for-bin.sh
  370. wrapper.c
  371. write_or_die.c
  372. ws.c
  373. wt-status.c
  374. wt-status.h
  375. xdiff-interface.c
  376. xdiff-interface.h
  377. zlib.c