diff options
Diffstat (limited to 'mg.c')
| -rw-r--r-- | mg.c | 107 |
1 files changed, 106 insertions, 1 deletions
@@ -946,11 +946,33 @@ magic_setamagic(SV *sv, MAGIC *mg) #endif /* OVERLOAD */ int +magic_getnkeys(SV *sv, MAGIC *mg) +{ + HV *hv = (HV*)LvTARG(sv); + HE *entry; + I32 i = 0; + + if (hv) { + (void) hv_iterinit(hv); + if (!SvRMAGICAL(hv) || !mg_find((SV*)hv,'P')) + i = HvKEYS(hv); + else { + /*SUPPRESS 560*/ + while (entry = hv_iternext(hv)) { + i++; + } + } + } + + sv_setiv(sv, (IV)i); + return 0; +} + +int magic_setnkeys(SV *sv, MAGIC *mg) { if (LvTARG(sv)) { hv_ksplit((HV*)LvTARG(sv), SvIV(sv)); - LvTARG(sv) = Nullsv; /* Don't allow a ref to reassign this. */ } return 0; } @@ -1219,6 +1241,23 @@ magic_setglob(SV *sv, MAGIC *mg) } int +magic_getsubstr(SV *sv, MAGIC *mg) +{ + STRLEN len; + SV *lsv = LvTARG(sv); + char *tmps = SvPV(lsv,len); + I32 offs = LvTARGOFF(sv); + I32 rem = LvTARGLEN(sv); + + if (offs > len) + offs = len; + if (rem + offs > len) + rem = len - offs; + sv_setpvn(sv, tmps + offs, (STRLEN)rem); + return 0; +} + +int magic_setsubstr(SV *sv, MAGIC *mg) { STRLEN len; @@ -1254,6 +1293,72 @@ magic_settaint(SV *sv, MAGIC *mg) } int +magic_getvec(SV *sv, MAGIC *mg) +{ + SV *lsv = LvTARG(sv); + unsigned char *s; + unsigned long retnum; + STRLEN lsvlen; + I32 len; + I32 offset; + I32 size; + + if (!lsv) { + SvOK_off(sv); + return 0; + } + s = (unsigned char *) SvPV(lsv, lsvlen); + offset = LvTARGOFF(sv); + size = LvTARGLEN(sv); + len = (offset + size + 7) / 8; + + /* Copied from pp_vec() */ + + if (len > lsvlen) { + if (size <= 8) + retnum = 0; + else { + offset >>= 3; + if (size == 16) { + if (offset >= lsvlen) + retnum = 0; + else + retnum = (unsigned long) s[offset] << 8; + } + else if (size == 32) { + if (offset >= lsvlen) + retnum = 0; + else if (offset + 1 >= lsvlen) + retnum = (unsigned long) s[offset] << 24; + else if (offset + 2 >= lsvlen) + retnum = ((unsigned long) s[offset] << 24) + + ((unsigned long) s[offset + 1] << 16); + else + retnum = ((unsigned long) s[offset] << 24) + + ((unsigned long) s[offset + 1] << 16) + + (s[offset + 2] << 8); + } + } + } + else if (size < 8) + retnum = (s[offset >> 3] >> (offset & 7)) & ((1 << size) - 1); + else { + offset >>= 3; + if (size == 8) + retnum = s[offset]; + else if (size == 16) + retnum = ((unsigned long) s[offset] << 8) + s[offset+1]; + else if (size == 32) + retnum = ((unsigned long) s[offset] << 24) + + ((unsigned long) s[offset + 1] << 16) + + (s[offset + 2] << 8) + s[offset+3]; + } + + sv_setuv(sv, (UV)retnum); + return 0; +} + +int magic_setvec(SV *sv, MAGIC *mg) { do_vecset(sv); /* XXX slurp this routine */ |