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-rw-r--r--libbuild2/in/rule.cxx40
-rw-r--r--libbuild2/in/rule.hxx10
2 files changed, 41 insertions, 9 deletions
diff --git a/libbuild2/in/rule.cxx b/libbuild2/in/rule.cxx
index faf1ec1..2117b0e 100644
--- a/libbuild2/in/rule.cxx
+++ b/libbuild2/in/rule.cxx
@@ -255,6 +255,9 @@ namespace build2
assert (v); // Rule semantics change without version increment?
+ if (p3 != string::npos)
+ p3 -= p2; // Hash length.
+
if (s->compare (p2, p3, sha256 (*v).string ()) == 0)
{
dd_skip++;
@@ -336,7 +339,7 @@ namespace build2
#endif
auto_rmfile arm (tp);
- // Note: this default will only be used if the file if empty (i.e.,
+ // Note: this default will only be used if the file is empty (i.e.,
// does not contain even a newline).
//
const char* nl (
@@ -347,8 +350,8 @@ namespace build2
#endif
);
- string s; // Reuse the buffer.
- for (uint64_t ln (1);; ++ln)
+ uint64_t ln (1);
+ for (string s;; ++ln)
{
what = "read"; whom = &ip;
if (!getline (ifs, s))
@@ -361,22 +364,31 @@ namespace build2
if (crlf)
s.pop_back();
+ what = "write"; whom = &tp;
+ if (ln != 1)
+ ofs << nl;
+
+ nl = crlf ? "\r\n" : "\n"; // Preserve the original line ending.
+
+ if (ln == 1)
+ perform_update_pre (a, t, ofs, nl);
+
// Not tracking column for now (see also depdb above).
//
process (location (ip, ln),
a, t,
dd, dd_skip,
s, 0,
- (crlf ? "\r\n" : "\n"), sym, strict, null);
+ nl, sym, strict, null);
- what = "write"; whom = &tp;
- if (ln != 1)
- ofs << nl; // See below.
ofs << s;
-
- nl = crlf ? "\r\n" : "\n"; // Preserve the original line ending.
}
+ what = "write"; whom = &tp;
+ if (ln == 1)
+ perform_update_pre (a, t, ofs, nl);
+ perform_update_post (a, t, ofs, nl);
+
// Close depdb before closing the output file so its mtime is not
// newer than of the output.
//
@@ -416,6 +428,16 @@ namespace build2
}
void rule::
+ perform_update_pre (action, const target&, ofdstream&, const char*) const
+ {
+ }
+
+ void rule::
+ perform_update_post (action, const target&, ofdstream&, const char*) const
+ {
+ }
+
+ void rule::
process (const location& l,
action a, const target& t,
depdb& dd, size_t& dd_skip,
diff --git a/libbuild2/in/rule.hxx b/libbuild2/in/rule.hxx
index 1294586..33caea4 100644
--- a/libbuild2/in/rule.hxx
+++ b/libbuild2/in/rule.hxx
@@ -66,6 +66,16 @@ namespace build2
virtual void
perform_update_depdb (action, const target&, depdb&) const;
+ // Pre/post update.
+ //
+ virtual void
+ perform_update_pre (action, const target&,
+ ofdstream&, const char* newline) const;
+
+ virtual void
+ perform_update_post (action, const target&,
+ ofdstream&, const char* newline) const;
+
// Perform variable lookup.
//
// Flags can be used by a custom implementation to alter the lookup