diff options
Diffstat (limited to 'MyFirstObjectWalk.txt')
-rw-r--r-- | MyFirstObjectWalk.txt | 26 |
1 files changed, 20 insertions, 6 deletions
diff --git a/MyFirstObjectWalk.txt b/MyFirstObjectWalk.txt index 200e628e3..c68cdb11b 100644 --- a/MyFirstObjectWalk.txt +++ b/MyFirstObjectWalk.txt @@ -41,6 +41,7 @@ Open up a new file `builtin/walken.c` and set up the command handler: */ #include "builtin.h" +#include "trace.h" int cmd_walken(int argc, const char **argv, const char *prefix) { @@ -49,12 +50,13 @@ int cmd_walken(int argc, const char **argv, const char *prefix) } ---- -NOTE: `trace_printf()` differs from `printf()` in that it can be turned on or -off at runtime. For the purposes of this tutorial, we will write `walken` as -though it is intended for use as a "plumbing" command: that is, a command which -is used primarily in scripts, rather than interactively by humans (a "porcelain" -command). So we will send our debug output to `trace_printf()` instead. When -running, enable trace output by setting the environment variable `GIT_TRACE`. +NOTE: `trace_printf()`, defined in `trace.h`, differs from `printf()` in +that it can be turned on or off at runtime. For the purposes of this +tutorial, we will write `walken` as though it is intended for use as +a "plumbing" command: that is, a command which is used primarily in +scripts, rather than interactively by humans (a "porcelain" command). +So we will send our debug output to `trace_printf()` instead. +When running, enable trace output by setting the environment variable `GIT_TRACE`. Add usage text and `-h` handling, like all subcommands should consistently do (our test suite will notice and complain if you fail to do so). @@ -341,6 +343,10 @@ the walk loop below the `prepare_revision_walk()` call within your `walken_commit_walk()`: ---- +#include "pretty.h" + +... + static void walken_commit_walk(struct rev_info *rev) { struct commit *commit; @@ -754,6 +760,10 @@ reachable objects are walked in order to populate the list. First, add the `struct oidset` and related items we will use to iterate it: ---- +#include "oidset.h" + +... + static void walken_object_walk( ... @@ -805,6 +815,10 @@ just walks of commits. First, we'll make our handlers chattier - modify go: ---- +#include "hex.h" + +... + static void walken_show_commit(struct commit *cmt, void *buf) { trace_printf("commit: %s\n", oid_to_hex(&cmt->object.oid)); |