author Frederic Plourde <>
Tue, 25 May 2010 17:13:47 -0700
changeset 46880 216fccb29929f888038c8bce988e77b2c1c90f60
parent 1 9b2a99adc05e53cd4010de512f50118594756650
child 77799 e7854b4d29ba905ae3994f821b160c989bac4260
permissions -rw-r--r--
Bug 566869 - prefapi.h does not like Chromium's prtypes.h. r=bsmedberg

/* ***** BEGIN LICENSE BLOCK *****
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 * The Initial Developer of the Original Code is Darin Fisher.
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 *   Darin Fisher <>
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#ifndef prefread_h__
#define prefread_h__

#include "prtypes.h"
#include "prefapi.h"


 * Callback function used to notify consumer of preference name value pairs.
 * The pref name and value must be copied by the implementor of the callback
 * if they are needed beyond the scope of the callback function.
 * @param closure
 *        user data passed to PREF_InitParseState
 * @param pref
 *        preference name
 * @param val
 *        preference value
 * @param type
 *        preference type (PREF_STRING, PREF_INT, or PREF_BOOL)
 * @param defPref
 *        preference type (PR_TRUE: default, PR_FALSE: user preference)
typedef void (*PrefReader)(void       *closure,
                           const char *pref,
                           PrefValue   val,
                           PrefType    type,
                           PRBool      defPref);

/* structure fields are private */
typedef struct PrefParseState {
    PrefReader  reader;
    void       *closure;
    int         state;      /* PREF_PARSE_...                */
    int         nextstate;  /* sometimes used...             */
    const char *smatch;     /* string to match               */
    int         sindex;     /* next char of smatch to check  */
                            /* also, counter in \u parsing   */
    PRUnichar   utf16[2];   /* parsing UTF16  (\u) escape    */
    int         esclen;     /* length in esctmp              */
    char        esctmp[6];  /* raw escape to put back if err */
    char        quotechar;  /* char delimiter for quotations */
    char       *lb;         /* line buffer (only allocation) */
    char       *lbcur;      /* line buffer cursor            */
    char       *lbend;      /* line buffer end               */
    char       *vb;         /* value buffer (ptr into lb)    */
    PrefType    vtype;      /* PREF_STRING,INT,BOOL          */
    PRBool      fdefault;   /* PR_TRUE if (default) pref     */
} PrefParseState;

 * PREF_InitParseState
 * Called to initialize a PrefParseState instance.
 * @param ps
 *        PrefParseState instance.
 * @param reader
 *        PrefReader callback function, which will be called once for each
 *        preference name value pair extracted.
 * @param closure
 *        PrefReader closure.
void PREF_InitParseState(PrefParseState *ps, PrefReader reader, void *closure);

 * PREF_FinalizeParseState
 * Called to release any memory in use by the PrefParseState instance.
 * @param ps
 *        PrefParseState instance.
void PREF_FinalizeParseState(PrefParseState *ps);

 * PREF_ParseBuf
 * Called to parse a buffer containing some portion of a preference file.  This
 * function may be called repeatedly as new data is made available.  The
 * PrefReader callback function passed PREF_InitParseState will be called as
 * preference name value pairs are extracted from the data.
 * @param ps
 *        PrefParseState instance.  Must have been initialized.
 * @param buf
 *        Raw buffer containing data to be parsed.
 * @param bufLen
 *        Length of buffer.
 * @return PR_FALSE if buffer contains malformed content.
PRBool PREF_ParseBuf(PrefParseState *ps, const char *buf, int bufLen);

#endif /* prefread_h__ */