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Formating: support specifying costant strings

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李通洲
2024-07-15 11:00:15 +08:00
parent 64c53e2cdc
commit 1947aa2b0e
4 changed files with 43 additions and 0 deletions
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src/common/format.c
+21
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@@ -244,6 +244,27 @@ void ffParseFormatString(FFstrbuf* buffer, const FFstrbuf* formatstr, uint32_t n
continue;
}
//test for constant, if so evaluate it
if (firstChar == '$')
{
char* pend = NULL;
int32_t indexSigned = (int32_t) strtol(placeholderValue.chars + 1, &pend, 10);
uint32_t index = (uint32_t) indexSigned;
bool backward = indexSigned < 0;
if (indexSigned == 0 || *pend != '\0' || instance.config.display.constants.length < index)
{
appendInvalidPlaceholder(buffer, "{", &placeholderValue, i, formatstr->length);
continue;
}
FFstrbuf* item = FF_LIST_GET(FFstrbuf, instance.config.display.constants, backward
? instance.config.display.constants.length - index
: index - 1);
ffStrbufAppend(buffer, item);
continue;
}
int32_t truncLength = INT32_MAX;
char* pColon = memchr(placeholderValue.chars, ':', placeholderValue.length);
if (pColon != NULL)