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Fix bug #1088 and try even harder by using substring if possible

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git-svn-id: https://svn.code.sf.net/p/nsis/code/NSIS/trunk@6451 212acab6-be3b-0410-9dea-997c60f758d6
This commit is contained in:
anders_k 2014-03-10 00:06:42 +00:00
parent 656ade8732
commit a864703ce9
2 changed files with 12 additions and 8 deletions
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2
Docs/src/history.but
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@ -18,6 +18,8 @@ Released on ?, 2014
\b Added P<, P<=, P=, P<>, P>= and P> LogicLib ptrdiff_t tests
\b Try harder to find duplicate strings in string block (\W{http://sf.net/p/nsis/bugs/1088/}{bug #1088})
\H{v3.0a2} 3.0 Alpha 2
Released on December 24th, 2013

18
Source/strlist.cpp
View file

@ -29,7 +29,7 @@ char* convert_processed_string_to_ansi(char *out, const TCHAR *in, WORD codepage
static inline bool byte_rev_match(const void*ptr1, const void*ptr2, size_t cb)
{
char *p1 = (char*) ptr1, *p2 = (char*) ptr2;
if (cb) for(; --cb;) if (p1[cb] != p2[cb]) return false;
for(; cb--;) if (p1[cb] != p2[cb]) return false;
return true;
}
@ -44,7 +44,7 @@ unsigned int ExeHeadStringList::getnum() const
{
for(;;)
{
if (pos+=cb >= cbList) break;
if ((pos+=cb) >= cbList) break;
cb = StrLenUTF16(p+=cb) + 1, ++num;
}
}
@ -52,7 +52,7 @@ unsigned int ExeHeadStringList::getnum() const
{
for(;;)
{
if (pos+=cb >= cbList) break;
if ((pos+=cb) >= cbList) break;
cb = strlen(p+=cb) + 1, ++num;
}
}
@ -134,26 +134,28 @@ unsigned int ExeHeadStringList::find(const void *ptr, unsigned int cchF, WORD co
cbF = cbMB, find = (const wchar_t*) bufMB;
}
unsigned int cbList = gettotalsize(), cb = 0, retval = -1, pos;
size_t cbList = gettotalsize(), cb = 0, retval = -1, pos;
pos = 1 + !!m_wide, p += pos; // Skip empty string
if (m_wide)
{
for(;;)
{
if (pos+=cb >= cbList) break;
if ((pos+=cb) >= cbList) break;
cb = (StrLenUTF16(p+=cb) + 1) * 2;
if (cb < cbF) continue;
if (byte_rev_match(p,find,cbF)) { retval = pos / WIDEDIV; break; }
size_t cbOfs = cb - cbF;
if (byte_rev_match(p + cbOfs,find,cbF)) { retval = (pos + cbOfs) / WIDEDIV; break; }
}
}
else
{
for(;;)
{
if (pos+=cb >= cbList) break;
if ((pos+=cb) >= cbList) break;
cb = (unsigned int) strlen(p+=cb) + 1;
if (cb < cbF) continue;
if (byte_rev_match(p,find,cbF)) { retval = pos; break; }
size_t cbOfs = cb - cbF;
if (byte_rev_match(p + cbOfs,find,cbF)) { retval = (pos + cbOfs); break; }
}
if (ppBufMB)
*ppBufMB = bufMB;