tzparser.h File Reference

#include "utils/datetime.h"

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Data Structures
struct	tzEntry

Typedefs
typedef struct tzEntry	tzEntry

Functions
TimeZoneAbbrevTable *	load_tzoffsets (const char *filename)

Typedef Documentation

tzEntry

typedef struct tzEntry tzEntry

Function Documentation

load_tzoffsets()

TimeZoneAbbrevTable* load_tzoffsets

(

const char *

filename

)

Definition at line 447 of file tzparser.c.

{
    TimeZoneAbbrevTable *result = NULL;
    MemoryContext tmpContext;
    MemoryContext oldContext;
    tzEntry    *array;
    int         arraysize;
    int         n;
 
    /*
     * Create a temp memory context to work in.  This makes it easy to clean
     * up afterwards.
     */
    tmpContext = AllocSetContextCreate(CurrentMemoryContext,
                                       "TZParserMemory",
                                       ALLOCSET_SMALL_SIZES);
    oldContext = MemoryContextSwitchTo(tmpContext);
 
    /* Initialize array at a reasonable size */
    arraysize = 128;
    array = (tzEntry *) palloc(arraysize * sizeof(tzEntry));
 
    /* Parse the file(s) */
    n = ParseTzFile(filename, 0, &array, &arraysize, 0);
 
    /* If no errors so far, let datetime.c allocate memory & convert format */
    if (n >= 0)
    {
        result = ConvertTimeZoneAbbrevs(array, n);
        if (!result)
            GUC_check_errmsg("out of memory");
    }
 
    /* Clean up */
    MemoryContextSwitchTo(oldContext);
    MemoryContextDelete(tmpContext);
 
    return result;
}

References ALLOCSET_SMALL_SIZES, AllocSetContextCreate, ConvertTimeZoneAbbrevs(), CurrentMemoryContext, filename, GUC_check_errmsg, MemoryContextDelete(), MemoryContextSwitchTo(), palloc(), and ParseTzFile().

Referenced by check_timezone_abbreviations().