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FFstrbuf: add new methods ffStrbufPrependC and ffStrbufInsertNC

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李通洲
2024-09-26 14:34:51 +08:00
parent 8295f66320
commit 4d7d367e72
3 changed files with 49 additions and 0 deletions
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src/util/FFstrbuf.c
+20
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@@ -211,6 +211,14 @@ void ffStrbufPrependNS(FFstrbuf* strbuf, uint32_t length, const char* value)
strbuf->length += length;
}
void ffStrbufPrependC(FFstrbuf* strbuf, char c)
{
ffStrbufEnsureFree(strbuf, 1);
memmove(strbuf->chars + 1, strbuf->chars, strbuf->length + 1); // + 1 for the null byte
strbuf->chars[0] = c;
strbuf->length += 1;
}
void ffStrbufSetNS(FFstrbuf* strbuf, uint32_t length, const char* value)
{
ffStrbufClear(strbuf);
@@ -511,3 +519,15 @@ void ffStrbufLowerCase(FFstrbuf* strbuf)
for (uint32_t i = 0; i < strbuf->length; ++i)
strbuf->chars[i] = (char) tolower(strbuf->chars[i]);
}
void ffStrbufInsertNC(FFstrbuf* strbuf, uint32_t index, uint32_t num, char c)
{
if(num == 0) return;
if (index >= strbuf->length)
index = strbuf->length;
ffStrbufEnsureFree(strbuf, num);
memmove(strbuf->chars + index + num, strbuf->chars + index, strbuf->length - index + 1);
memset(&strbuf->chars[index], c, num);
strbuf->length += num;
}
src/util/FFstrbuf.h
+3
View File
@@ -47,6 +47,9 @@ void ffStrbufAppendVF(FFstrbuf* strbuf, const char* format, va_list arguments);
const char* ffStrbufAppendSUntilC(FFstrbuf* strbuf, const char* value, char until);
void ffStrbufPrependNS(FFstrbuf* strbuf, uint32_t length, const char* value);
void ffStrbufPrependC(FFstrbuf* strbuf, char c);
void ffStrbufInsertNC(FFstrbuf* strbuf, uint32_t index, uint32_t num, char c);
void ffStrbufSetNS(FFstrbuf* strbuf, uint32_t length, const char* value);
void ffStrbufSet(FFstrbuf* strbuf, const FFstrbuf* value);