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typedef struct StringInfoData {
char *data; int len; int maxlen; int cursor;
} StringInfoData;
/*------------------------- * StringInfoData holds information about an extensible string. * data is the current buffer for the string (allocated with palloc). * len is the current string length. There is guaranteed to be * a terminating '\0' at data[len], although this is not very * useful when the string holds binary data rather than text. * maxlen is the allocated size in bytes of 'data', i.e. the maximum * string size (including the terminating '\0' char) that we can * currently store in 'data' without having to reallocate * more space. We must always have maxlen > len. * cursor is initialized to zero by makeStringInfo or initStringInfo, * but is not otherwise touched by the stringinfo.c routines. * Some routines use it to scan through a StringInfo. *------------------------- */
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