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Formatting: support syntax of sub string

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Fix #1256; Ref #1255
This commit is contained in:
李通洲
2024-09-11 11:07:00 +08:00
parent 68ab41f748
commit dc541ac781
3 changed files with 122 additions and 52 deletions
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src/common/format.c
+80 -52
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@@ -280,34 +280,18 @@ void ffParseFormatString(FFstrbuf* buffer, const FFstrbuf* formatstr, uint32_t n
continue;
}
int32_t truncLength = 0;
char align = '\0';
char* pSep = memchr(placeholderValue.chars, ':', placeholderValue.length);
if (pSep)
align = ':';
char* pSep = placeholderValue.chars;
char cSep = '\0';
while (*pSep && *pSep != ':' && *pSep != '<' && *pSep != '>' && *pSep != '~')
++pSep;
if (*pSep)
{
cSep = *pSep;
*pSep = '\0';
}
else
{
pSep = memchr(placeholderValue.chars, '<', placeholderValue.length);
if (pSep)
align = '<';
else
{
pSep = memchr(placeholderValue.chars, '>', placeholderValue.length);
if (pSep)
align = '>';
}
}
if (pSep)
{
char* pEnd = NULL;
truncLength = (int32_t) strtol(pSep + 1, &pEnd, 10);
if (*pEnd != '\0')
{
appendInvalidPlaceholder(buffer, "{", &placeholderValue, i, formatstr->length);
continue;
}
*pSep = '\0';
pSep = NULL;
}
uint32_t index = getArgumentIndex(placeholderValue.chars, numArgs, arguments);
@@ -318,53 +302,97 @@ void ffParseFormatString(FFstrbuf* buffer, const FFstrbuf* formatstr, uint32_t n
if (index > numArgs)
{
if (pSep) *pSep = align;
if (pSep) *pSep = cSep;
appendInvalidPlaceholder(buffer, "{", &placeholderValue, i, formatstr->length);
continue;
}
bool ellipsis = false;
if (truncLength < 0)
{
ellipsis = true;
truncLength = -truncLength;
}
if (!align)
if (!cSep)
ffFormatAppendFormatArg(buffer, &arguments[index - 1]);
else if (cSep == '~')
{
FF_STRBUF_AUTO_DESTROY tempString = ffStrbufCreate();
ffFormatAppendFormatArg(&tempString, &arguments[index - 1]);
char* pEnd = NULL;
int32_t start = (int32_t) strtol(pSep + 1, &pEnd, 10);
if (start < 0)
start = (int32_t) tempString.length + start;
if (start >= 0 && (uint32_t) start < tempString.length)
{
if (*pEnd == '\0')
ffStrbufAppendNS(buffer, tempString.length - (uint32_t) start, &tempString.chars[start]);
else if (*pEnd == ',')
{
int32_t end = (int32_t) strtol(pEnd + 1, &pEnd, 10);
if (!*pEnd)
{
if (end < 0)
end = (int32_t) tempString.length + end;
if ((uint32_t) end > tempString.length)
end = (int32_t) tempString.length;
if (end > start)
ffStrbufAppendNS(buffer, (uint32_t) (end - start), &tempString.chars[start]);
}
}
}
if (*pEnd)
{
*pSep = cSep;
appendInvalidPlaceholder(buffer, "{", &placeholderValue, i, formatstr->length);
continue;
}
}
else
{
ffStrbufClear(&placeholderValue);
ffFormatAppendFormatArg(&placeholderValue, &arguments[index - 1]);
if (placeholderValue.length == (uint32_t) truncLength)
ffStrbufAppend(buffer, &placeholderValue);
else if (placeholderValue.length > (uint32_t) truncLength)
char* pEnd = NULL;
int32_t truncLength = (int32_t) strtol(pSep + 1, &pEnd, 10);
if (*pEnd != '\0')
{
if (align == ':')
*pSep = cSep;
appendInvalidPlaceholder(buffer, "{", &placeholderValue, i, formatstr->length);
continue;
}
bool ellipsis = false;
if (truncLength < 0)
{
ellipsis = true;
truncLength = -truncLength;
}
FF_STRBUF_AUTO_DESTROY tempString = ffStrbufCreate();
ffFormatAppendFormatArg(&tempString, &arguments[index - 1]);
if (tempString.length == (uint32_t) truncLength)
ffStrbufAppend(buffer, &tempString);
else if (tempString.length > (uint32_t) truncLength)
{
if (cSep == ':')
{
ffStrbufSubstrBefore(&placeholderValue, (uint32_t) truncLength);
ffStrbufTrimRightSpace(&placeholderValue);
ffStrbufSubstrBefore(&tempString, (uint32_t) truncLength);
ffStrbufTrimRightSpace(&tempString);
}
else
ffStrbufSubstrBefore(&placeholderValue, (uint32_t) (!ellipsis? truncLength : truncLength - 1));
ffStrbufAppend(buffer, &placeholderValue);
ffStrbufSubstrBefore(&tempString, (uint32_t) (!ellipsis? truncLength : truncLength - 1));
ffStrbufAppend(buffer, &tempString);
if (ellipsis)
ffStrbufAppendS(buffer, "…");
}
else if (align == ':')
ffStrbufAppend(buffer, &placeholderValue);
else if (cSep == ':')
ffStrbufAppend(buffer, &tempString);
else
{
if (align == '<')
if (cSep == '<')
{
ffStrbufAppend(buffer, &placeholderValue);
ffStrbufAppendNC(buffer, (uint32_t) truncLength - placeholderValue.length, ' ');
ffStrbufAppend(buffer, &tempString);
ffStrbufAppendNC(buffer, (uint32_t) truncLength - tempString.length, ' ');
}
else
{
ffStrbufAppendNC(buffer, (uint32_t) truncLength - placeholderValue.length, ' ');
ffStrbufAppend(buffer, &placeholderValue);
ffStrbufAppendNC(buffer, (uint32_t) truncLength - tempString.length, ' ');
ffStrbufAppend(buffer, &tempString);
}
}
}