Stanza(3sadm)

Synopsis

CC ... -lsysadm -lvtcl -ltclx -ltcl -lsocket -lgen -lm

#include <scoadmin/stanza.h>

stanza_cl *
StanzaHandle(void);

void
StanzaHandleFree(stanza_cl       *sfp);

#define StanzaNew StanzaHandle
#define StanzaDelete StanzaHandleFree

bool_t
StanzaOpen(stanza_cl        *sfp,
           char             *stanzaFileName,
           stanzaMode_t      openMode,
           errStatus_cl     *errStatus);

bool_t
StanzaClose(stanza_cl        *sfp,
            errStatus_cl     *errStatus);

const char *
StanzaFilename(stanza_cl        *sfp);

bool_t
StanzaGetAttrs(stanza_cl        *sfp,
               const char       *sectName,
               const char     ***attrs,
               errStatus_cl     *errStatus);

bool_t
StanzaGetSects(stanza_cl        *sfp ,
               const char     ***sects,
               errStatus_cl     *errStatus);

bool_t
StanzaGetVals(stanza_cl        *sfp,
              const char       *sectName,
              const char       *attrName,
              const char     ***vals,
              errStatus_cl     *errStatus);

bool_t
StanzaPrint(stanza_cl        *sfp,
            errStatus_cl     *errStatus);

bool_t
StanzaAddSect(stanza_cl         *sfp,
              const char       *sectName,
              errStatus_cl     *errPtr);

bool_t
StanzaDelSect(stanza_cl         *sfp,
              const char        *sectName,
              errStatus_cl      *errPtr);

bool_t
StanzaModSect(stanza_cl         *sfp,
              const char        *sectName,
              const char        *newName,
              errStatus_cl      *errPtr);

bool_t
StanzaAddAttr(stanza_cl         *sfp,
              const char        *sectName,
              const char        *attrName,
              errStatus_cl      *errPtr);

bool_t
StanzaDelAttr(stanza_cl         *sfp,
              const char        *sectName,
              const char        *attrName,
              errStatus_cl      *errPtr);

bool_t
StanzaModAttr(stanza_cl         *sfp,
              const char        *sectName,
              const char        *attrName,
              const char        *newName,
              errStatus_cl      *errPtr);

bool_t
StanzaAddValue(stanza_cl        *sfp,
               const char       *sectName,
               const char       *attrName,
               const char       *valName,
               errStatus_cl     *errPtr);

bool_t
StanzaDelValue(stanza_cl        *sfp,
               const char       *sectName,
               const char       *attrName,
               const char       *valName,
               errStatus_cl     *errPtr);

bool_t
StanzaModValue(stanza_cl        *sfp,
               const char       *sectName,
               const char       *attrName,
               const char       *valName,
               const char       *newName,
               errStatus_cl     *errPtr);

bool_t    
StanzaModIdxValue(stanza_cl        *sfp,
                  const char       *sectName,
                  const char       *attrName,
                  const int         valIdx,
                  const char       *valName,
                  errStatus_cl     *errPtr);

bool_t    
StanzaReplaceValue(stanza_cl        *sfp,
                   const char       *sectName,
                   const char       *attrName,
                   const int         valueCount,
                   const char      **values,
                   errStatus_cl     *errPtr);

bool_t
StanzaSync(stanza_cl        *sfp,
           errStatus_cl     *errPtr);

Description

StanzaOpen- open a stanza file

StanzaClose- writes stanza file to disk

StanzaFilename- obtain filename associated with a stanza handle

StanzaGetAttrs- get attributes from a section

StanzaGetSects- return a Tcl list of sections found in stanza file

StanzaGetVals- get list of values from stanza file

StanzaPrint- print contents of a stanza file

StanzaAddSect- add section to stanza file

StanzaDelSect- delete section in stanza file

StanzaModSect- change name of section in a stanza file

StanzaAddAttr- add an attribute to a stanza section

StanzaDelAttr- delete an attribute in a stanza section

StanzaModAttr- modify attribute in a stanza section

StanzaAddValue- add a value to a stanza file

StanzaDelValue- delete a value from a stanza file

StanzaModValue- modify a value in a stanza section

StanzaModIdxValue- replace indexed stanza value with new value

StanzaReplaceValue- replace value in a stanza section

StanzaSync- update a stanza file

The C interface to the stanza database library provides functionality equivalent to that of the Tcl interface with a few language-dependent changes. For the functional description of the stanza library, see Stanza(3tlib).

The differences between the C and Tcl interfaces are as follows:

• Before opening a stanza file, a stanza handle of type stanza_cl must be allocated with the StanzaHandle function, which is not required by the Tcl interface. This handle is used as the first argument of all the other stanza functions. The handle allocated by StanzaNew can be freed after use with the StanzaHandleFree function.

• In the case where a list of strings needs to be passed to a stanza function (StanzaReplaceValue), the caller must pass a pointer to an array of character pointers, along with the count of strings in the array. An example follows:

  stanza_cl *stzfile;
  char **valuelist = { "value1", "value2", "value3" };
  errStatus_cl err;
  
  StanzaReplaceValue(stzfile, "section", "attribute", 3, valuelist, &err);
  

• In the cases where a list of strings needs to be returned to the caller of a stanza function (StanzaGetSects, StanzaGetAttrs, StanzaGetVals), the address of a pointer to a list of character pointers must be passed, which is declared as a triple character pointer. The location addressed by this pointer is filled in with a pointer to a static, null-terminated array of character pointers. This array is only valid until the next call of the same function. An example follows:

  stanza_cl *stzfile;
  char **valuelist, **valueptr;
  errStatus_cl err;
  
  StanzaGetVals(stzfile, "section", "attribute", &valuelist, &err);
  for (valueptr = valuelist; *valueptr != NULL; valueptr++)
      printf("%s\n", *valueptr);
  

• A pointer to an error stack must be passed as the last parameter of every stanza function, except StanzaHandle and StanzaHandleFree. This error stack will be filled in with information about any error that occurs during the stanza function.

References