From 859f9c45814afae3250424946e2156ea366224f7 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Wed, 14 Feb 2007 01:30:29 +0100 Subject: teach diff machinery about --ignore-space-at-eol `git diff --ignore-space-at-eol` will ignore whitespace at the line ends. Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- xdiff/xdiff.h | 3 ++- xdiff/xutils.c | 24 ++++++++++++++++++++++++ 2 files changed, 26 insertions(+), 1 deletion(-) (limited to 'xdiff') diff --git a/xdiff/xdiff.h b/xdiff/xdiff.h index fa409d5234..e874a7c46a 100644 --- a/xdiff/xdiff.h +++ b/xdiff/xdiff.h @@ -31,7 +31,8 @@ extern "C" { #define XDF_NEED_MINIMAL (1 << 1) #define XDF_IGNORE_WHITESPACE (1 << 2) #define XDF_IGNORE_WHITESPACE_CHANGE (1 << 3) -#define XDF_WHITESPACE_FLAGS (XDF_IGNORE_WHITESPACE | XDF_IGNORE_WHITESPACE_CHANGE) +#define XDF_IGNORE_WHITESPACE_AT_EOL (1 << 4) +#define XDF_WHITESPACE_FLAGS (XDF_IGNORE_WHITESPACE | XDF_IGNORE_WHITESPACE_CHANGE | XDF_IGNORE_WHITESPACE_AT_EOL) #define XDL_PATCH_NORMAL '-' #define XDL_PATCH_REVERSE '+' diff --git a/xdiff/xutils.c b/xdiff/xutils.c index 1b899f32c4..3653864e4b 100644 --- a/xdiff/xutils.c +++ b/xdiff/xutils.c @@ -215,6 +215,21 @@ int xdl_recmatch(const char *l1, long s1, const char *l2, long s2, long flags) return 0; } return (i1 >= s1 && i2 >= s2); + } else if (flags & XDF_IGNORE_WHITESPACE_AT_EOL) { + for (i1 = i2 = 0; i1 < s1 && i2 < s2; ) { + if (l1[i1] != l2[i2]) { + while (i1 < s1 && isspace(l1[i1])) + i1++; + while (i2 < s2 && isspace(l2[i2])) + i2++; + if (i1 < s1 || i2 < s2) + return 0; + return 1; + } + i1++; + i2++; + } + return i1 >= s1 && i2 >= s2; } else return s1 == s2 && !memcmp(l1, l2, s1); @@ -227,6 +242,7 @@ unsigned long xdl_hash_record(char const **data, char const *top, long flags) { for (; ptr < top && *ptr != '\n'; ptr++) { if (isspace(*ptr) && (flags & XDF_WHITESPACE_FLAGS)) { + const char *ptr2 = ptr; while (ptr + 1 < top && isspace(ptr[1]) && ptr[1] != '\n') ptr++; @@ -235,6 +251,14 @@ unsigned long xdl_hash_record(char const **data, char const *top, long flags) { ha += (ha << 5); ha ^= (unsigned long) ' '; } + if (flags & XDF_IGNORE_WHITESPACE_AT_EOL + && ptr[1] != '\n') { + while (ptr2 != ptr + 1) { + ha += (ha << 5); + ha ^= (unsigned long) *ptr2; + ptr2++; + } + } continue; } ha += (ha << 5); -- cgit v1.2.1