Jserv's blog

diffstat : diff 輸出的歷史統計

Debian package [diffstat] 可以建構 diff 輸出的歷史統計，這對於一個採用 version control 的專案，有參考的價值。以 xorz 來說，大致的使用方式如下：

jserv@venux:~/gui-toolkits/xorz$ svn diff -r1:HEAD | diffstat
 ChangeLog              |    7 
 ChangeLog-xorz         |  135 ++
 GL/glx/g_disptab_EXT.c |    6 
 GL/glx/g_disptab_EXT.h |    9 
 GL/glx/g_render.c      |  518 ++++----
 GL/glx/g_renderswap.c  |  454 +++----
 GL/glx/g_single.c      |  249 +++-
 GL/glx/g_singleswap.c  |  273 +++-
 GL/glx/glxcmds.c       |   17 
 GL/glx/glxcmdsswap.c   |    4 
 GL/glx/glxscreens.c    |    2 
 GL/glx/glxserver.h     |  448 +++++++
 GL/glx/render2.c       |   60 -
 GL/glx/render2swap.c   |   48 
 GL/glx/renderpix.c     |  200 +--
 GL/glx/renderpixswap.c |  200 +--
 GL/glx/rensizetab.c    |    2 
 GL/glx/single2.c       |   18 
 GL/glx/single2swap.c   |   16 
 GL/glx/singlepix.c     |   52 
 GL/glx/singlepixswap.c |   52 
 GL/glx/singlesize.c    |   11 
 GL/glx/xfont.c         |   20 
 GL/mesa/Makefile.am    |   84 +
 GL/mesa/X/xf86glx.c    |  390 ++++++
 Xext/shmint.h          |   23 
 Xext/syncint.h         |   77 -
 configure.ac           |   29 
 drm/drm.h              |    1 
 fb/fbbltone.c          |    2 
 fb/fbcompose.c         | 1045 +++++++++++++----
 fb/fbmmx.c             |  701 ++++++++++-
 fb/fbmmx.h             |   19 
 fb/fbpict.c            |   14 
 fb/fbpict.h            |  200 ++-
 hw/kdrive/src/kmode.c  |    7 
 hw/xgl/Makefile.am     |    3 
 hw/xgl/egl/Makefile.am |   16 
 hw/xgl/egl/evdev.c     |  630 ++++++++++
 hw/xgl/egl/kinput.c    | 1683 ++++++++++++++++++++++++++++
 hw/xgl/egl/kkeymap.h   |   58 
 hw/xgl/egl/xegl.c      |  799 +++++++++++++
 hw/xgl/egl/xegl.h      |  131 ++
 hw/xgl/egl/xeglinput.c |  168 ++
 hw/xgl/glx/xglx.c      |   81 +
 hw/xgl/xgl.h           |   57 
 hw/xgl/xglcopy.c       |    7 
 hw/xgl/xglget.c        |    3 
 hw/xgl/xglglx.c        | 2890 +++++++++++++++++++++++++++++++++++--------------
 hw/xgl/xglglyph.c      |  116 +
 hw/xgl/xglinput.c      |    2 
 hw/xgl/xglpixmap.c     |   13 
 hw/xgl/xglscreen.c     |   12 
 hw/xgl/xglsync.c       |   14 
 hw/xgl/xgltrap.c       |    2 
 include/GL/glxproto.h  |    6 
 include/config.h.in    |    3 
 include/picturestr.h   |  133 ++
 mi/miwideline.c        |    4 
 miext/damage/damage.c  |   16 
 render/picture.c       |  492 +++++++-
 xkb/ddxList.c          |   92 -
 xkb/ddxLoad.c          |  329 +++--
 63 files changed, 10490 insertions(+), 2663 deletions(-)

在 [diffstat] 的 man page 提到：

This program reads the output of diff and displays a histogram of the nsertions, deletions, and modifications per-file. Diffstat is a program that is useful for reviewing large, complex patch files. It reads from one or more input files which contain output from diff, producing a histogram of the total lines changed for each file referenced. If the input filename ends with .bz2, .Z or .gz, diffstat will read the uncompressed data via a pipe from the corresponding program.

所以 diffstat 基本是參考 unified diff (也就是 diff -u) 的結果，統計個別與整體的 insertions(+) 與 deletions(-) 數量。
由 jserv 發表於 December 11, 2005 03:56 PM