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tetex-bin  3.0
Defines | Functions | Variables
alloc_entry.c File Reference
#include <curses.priv.h>
#include <tic.h>
#include <term_entry.h>

Go to the source code of this file.

Defines

#define ABSENT_OFFSET   -1
#define CANCELLED_OFFSET   -2
#define MAX_STRTAB   4096 /* documented maximum entry size */

Functions

 _nc_init_entry (TERMTYPE *const tp)
 _nc_copy_entry (ENTRY *oldp)
 _nc_save_str (const char *const string)
 _nc_wrap_entry (ENTRY *const ep, bool copy_strings)
 _nc_merge_entry (TERMTYPE *const to, TERMTYPE *const from)

Variables

static char * stringbuf
static size_t next_free

Define Documentation

#define ABSENT_OFFSET   -1

Definition at line 53 of file alloc_entry.c.

#define CANCELLED_OFFSET   -2

Definition at line 54 of file alloc_entry.c.

#define MAX_STRTAB   4096 /* documented maximum entry size */

Definition at line 56 of file alloc_entry.c.


Function Documentation

_nc_copy_entry ( ENTRY oldp)

Definition at line 105 of file alloc_entry.c.

{
    ENTRY *newp = typeCalloc(ENTRY, 1);

    if (newp != 0) {
       *newp = *oldp;
       _nc_copy_termtype(&(newp->tterm), &(oldp->tterm));
    }
    return newp;
}

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_nc_init_entry ( TERMTYPE *const  tp)

Definition at line 62 of file alloc_entry.c.

{
    unsigned i;

#if NO_LEAKS
    if (tp == 0) {
       FreeAndNull(stringbuf);
       return;
    }
#endif

    if (stringbuf == 0)
       stringbuf = (char *) malloc(MAX_STRTAB);

#if NCURSES_XNAMES
    tp->num_Booleans = BOOLCOUNT;
    tp->num_Numbers = NUMCOUNT;
    tp->num_Strings = STRCOUNT;
    tp->ext_Booleans = 0;
    tp->ext_Numbers = 0;
    tp->ext_Strings = 0;
#endif
    if (tp->Booleans == 0)
       tp->Booleans = typeMalloc(char, BOOLCOUNT);
    if (tp->Numbers == 0)
       tp->Numbers = typeMalloc(short, NUMCOUNT);
    if (tp->Strings == 0)
       tp->Strings = typeMalloc(char *, STRCOUNT);

    for_each_boolean(i, tp)
       tp->Booleans[i] = FALSE;

    for_each_number(i, tp)
       tp->Numbers[i] = ABSENT_NUMERIC;

    for_each_string(i, tp)
       tp->Strings[i] = ABSENT_STRING;

    next_free = 0;
}

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_nc_merge_entry ( TERMTYPE *const  to,
TERMTYPE *const  from 
)

Definition at line 221 of file alloc_entry.c.

{
    unsigned i;

#if NCURSES_XNAMES
    _nc_align_termtype(to, from);
#endif
    for_each_boolean(i, from) {
       if (to->Booleans[i] != CANCELLED_BOOLEAN) {
           int mergebool = from->Booleans[i];

           if (mergebool == CANCELLED_BOOLEAN)
              to->Booleans[i] = FALSE;
           else if (mergebool == TRUE)
              to->Booleans[i] = mergebool;
       }
    }

    for_each_number(i, from) {
       if (to->Numbers[i] != CANCELLED_NUMERIC) {
           int mergenum = from->Numbers[i];

           if (mergenum == CANCELLED_NUMERIC)
              to->Numbers[i] = ABSENT_NUMERIC;
           else if (mergenum != ABSENT_NUMERIC)
              to->Numbers[i] = mergenum;
       }
    }

    /*
     * Note: the copies of strings this makes don't have their own
     * storage.  This is OK right now, but will be a problem if we
     * we ever want to deallocate entries.
     */
    for_each_string(i, from) {
       if (to->Strings[i] != CANCELLED_STRING) {
           char *mergestring = from->Strings[i];

           if (mergestring == CANCELLED_STRING)
              to->Strings[i] = ABSENT_STRING;
           else if (mergestring != ABSENT_STRING)
              to->Strings[i] = mergestring;
       }
    }
}

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_nc_save_str ( const char *const  string)

Definition at line 117 of file alloc_entry.c.

{
    size_t old_next_free = next_free;
    size_t len = strlen(string) + 1;

    if (next_free + len < MAX_STRTAB) {
       strcpy(&stringbuf[next_free], string);
       DEBUG(7, ("Saved string %s", _nc_visbuf(string)));
       DEBUG(7, ("at location %d", (int) next_free));
       next_free += len;
    }
    return (stringbuf + old_next_free);
}

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_nc_wrap_entry ( ENTRY *const  ep,
bool  copy_strings 
)

Definition at line 133 of file alloc_entry.c.

{
    int offsets[MAX_ENTRY_SIZE / 2], useoffsets[MAX_USES];
    unsigned i, n;
    unsigned nuses = ep->nuses;
    TERMTYPE *tp = &(ep->tterm);

    if (copy_strings) {
       next_free = 0;              /* clear static storage */

       /* copy term_names, Strings, uses */
       tp->term_names = _nc_save_str(tp->term_names);
       for_each_string(i, tp) {
           if (tp->Strings[i] != ABSENT_STRING &&
              tp->Strings[i] != CANCELLED_STRING) {
              tp->Strings[i] = _nc_save_str(tp->Strings[i]);
           }
       }

       for (i = 0; i < nuses; i++) {
           if (ep->uses[i].name == 0) {
              ep->uses[i].name = _nc_save_str(ep->uses[i].name);
           }
       }

       free(tp->str_table);
    }

    n = tp->term_names - stringbuf;
    for_each_string(i, &(ep->tterm)) {
       if (tp->Strings[i] == ABSENT_STRING)
           offsets[i] = ABSENT_OFFSET;
       else if (tp->Strings[i] == CANCELLED_STRING)
           offsets[i] = CANCELLED_OFFSET;
       else
           offsets[i] = tp->Strings[i] - stringbuf;
    }

    for (i = 0; i < nuses; i++) {
       if (ep->uses[i].name == 0)
           useoffsets[i] = ABSENT_OFFSET;
       else
           useoffsets[i] = ep->uses[i].name - stringbuf;
    }

    if ((tp->str_table = typeMalloc(char, next_free)) == (char *) 0)
         _nc_err_abort(MSG_NO_MEMORY);
    (void) memcpy(tp->str_table, stringbuf, next_free);

    tp->term_names = tp->str_table + n;
    for_each_string(i, &(ep->tterm)) {
       if (offsets[i] == ABSENT_OFFSET)
           tp->Strings[i] = ABSENT_STRING;
       else if (offsets[i] == CANCELLED_OFFSET)
           tp->Strings[i] = CANCELLED_STRING;
       else
           tp->Strings[i] = tp->str_table + offsets[i];
    }

#if NCURSES_XNAMES
    if (!copy_strings) {
       if ((n = NUM_EXT_NAMES(tp)) != 0) {
           unsigned length = 0;
           for (i = 0; i < n; i++) {
              length += strlen(tp->ext_Names[i]) + 1;
              offsets[i] = tp->ext_Names[i] - stringbuf;
           }
           if ((tp->ext_str_table = typeMalloc(char, length)) == 0)
                _nc_err_abort(MSG_NO_MEMORY);
           for (i = 0, length = 0; i < n; i++) {
              tp->ext_Names[i] = tp->ext_str_table + length;
              strcpy(tp->ext_Names[i], stringbuf + offsets[i]);
              length += strlen(tp->ext_Names[i]) + 1;
           }
       }
    }
#endif

    for (i = 0; i < nuses; i++) {
       if (useoffsets[i] == ABSENT_OFFSET)
           ep->uses[i].name = 0;
       else
           ep->uses[i].name = (tp->str_table + useoffsets[i]);
    }
}

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Variable Documentation

size_t next_free [static]

Definition at line 59 of file alloc_entry.c.

char* stringbuf [static]

Definition at line 58 of file alloc_entry.c.