/*
+ * base code for various Tcl extensions
+ * Copyright 2006 Ian Jackson
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
*/
-#include "hbytes.h"
-#include "tables.h"
+#include "chiark-tcl-base.h"
-int staticerr(Tcl_Interp *ip, const char *m) {
+int cht_staticerr(Tcl_Interp *ip, const char *m, const char *ec) {
Tcl_SetResult(ip, (char*)m, TCL_STATIC);
+ if (ec) Tcl_SetObjErrorCode(ip, Tcl_NewStringObj(ec,-1));
return TCL_ERROR;
}
-void objfreeir(Tcl_Obj *o) {
+int cht_posixerr(Tcl_Interp *ip, int errnoval, const char *m) {
+ const char *em;
+
+ Tcl_ResetResult(ip);
+ errno= errnoval;
+ em= Tcl_PosixError(ip);
+ Tcl_AppendResult(ip, m, ": ", em, (char*)0);
+ return TCL_ERROR;
+}
+
+int cht_newfdposixerr(Tcl_Interp *ip, int fd, const char *m) {
+ int e;
+ e= errno;
+ close(fd);
+ return cht_posixerr(ip,e,m);
+}
+
+void cht_objfreeir(Tcl_Obj *o) {
if (o->typePtr && o->typePtr->freeIntRepProc)
o->typePtr->freeIntRepProc(o);
o->typePtr= 0;
}
-int do_hbytes_rep_info(ClientData cd, Tcl_Interp *ip,
- HBytes_Value v, Tcl_Obj **result) {
- const char *tn;
- int nums[3], i;
- Tcl_Obj *objl[4];
+void cht_obj_updatestr_vstringls(Tcl_Obj *o, ...) {
+ va_list al;
+ char *p;
+ const char *part;
+ int l, pl;
- memset(nums,0,sizeof(nums));
- nums[1]= hbytes_len(&v);
+ va_start(al,o);
+ for (l=0; (part= va_arg(al, const char*)); )
+ l+= va_arg(al, int);
+ va_end(al);
- if (HBYTES_ISEMPTY(&v)) tn= "empty";
- else if (HBYTES_ISSENTINEL(&v)) tn= "sentinel!";
- else if (HBYTES_ISSIMPLE(&v)) tn= "simple";
- else {
- HBytes_ComplexValue *cx= v.begin_complex;
- tn= "complex";
- nums[0]= cx->prespace;
- nums[2]= cx->avail - cx->len;
- }
-
- objl[0]= Tcl_NewStringObj((char*)tn,-1);
- for (i=0; i<3; i++) objl[i+1]= Tcl_NewIntObj(nums[i]);
- *result= Tcl_NewListObj(4,objl);
- return TCL_OK;
-}
+ o->length= l;
+ o->bytes= TALLOC(l+1);
-static void hbytes_t_dup(Tcl_Obj *src, Tcl_Obj *dup) {
- objfreeir(dup);
- hbytes_array(OBJ_HBYTES(dup),
- hbytes_data(OBJ_HBYTES(src)),
- hbytes_len(OBJ_HBYTES(src)));
-}
+ va_start(al,o);
+ for (p= o->bytes; (part= va_arg(al, const char*)); p += pl) {
+ pl= va_arg(al, int);
+ memcpy(p, part, pl);
+ }
+ va_end(al);
-static void hbytes_t_free(Tcl_Obj *o) {
- hbytes_free(OBJ_HBYTES(o));
+ *p= 0;
}
-static void hbytes_t_ustr(Tcl_Obj *o) {
- int l;
- char *str;
- const Byte *byte;
-
- byte= hbytes_data(OBJ_HBYTES(o));
- l= hbytes_len(OBJ_HBYTES(o));
- str= o->bytes= TALLOC(l*2+1);
- o->length= l*2;
- while (l>0) {
- sprintf(str,"%02x",*byte);
- str+=2; byte++; l--;
- }
- *str= 0;
+void cht_obj_updatestr_string(Tcl_Obj *o, const char *str) {
+ cht_obj_updatestr_vstringls(o, str, strlen(str), (char*)0);
}
-static int hbytes_t_sfa(Tcl_Interp *ip, Tcl_Obj *o) {
- char *str, *ep, *os;
- Byte *startbytes, *bytes;
- int l;
- char cbuf[3];
-
- os= str= Tcl_GetStringFromObj(o,&l); assert(str);
- objfreeir(o);
-
- if (l & 1) return staticerr(ip, "hbytes: conversion from hex:"
- " odd length in hex");
-
- startbytes= bytes= hbytes_arrayspace(OBJ_HBYTES(o), l/2);
-
- cbuf[2]= 0;
- while (l>0) {
- cbuf[0]= *str++;
- cbuf[1]= *str++;
- *bytes++= strtoul(cbuf,&ep,16);
- if (ep != cbuf+2) {
- hbytes_free(OBJ_HBYTES(o));
- return staticerr(ip, "hbytes: conversion from hex:"
- " bad hex digit");
- }
- l -= 2;
- }
+#define URANDOM "/dev/urandom"
- o->typePtr = &hbytes_type;
- return TCL_OK;
-}
+int cht_get_urandom(Tcl_Interp *ip, Byte *buffer, int l) {
+ static FILE *urandom;
-Tcl_ObjType hbytes_type = {
- "hbytes",
- hbytes_t_free, hbytes_t_dup, hbytes_t_ustr, hbytes_t_sfa
-};
+ int r, esave;
-int do_hbytes_raw2h(ClientData cd, Tcl_Interp *ip,
- Tcl_Obj *binary, HBytes_Value *result) {
- const char *str;
- int l;
+ if (!urandom) {
+ urandom= fopen(URANDOM,"rb");
+ if (!urandom) return cht_posixerr(ip,errno,"open " URANDOM);
+ }
+ r= fread(buffer,1,l,urandom);
+ if (r==l) return 0;
- str= Tcl_GetStringFromObj(binary,&l);
- hbytes_array(result, str, l);
- return TCL_OK;
-}
+ esave= errno;
+ fclose(urandom); urandom=0;
-int do_hbytes_h2raw(ClientData cd, Tcl_Interp *ip,
- HBytes_Value hex, Tcl_Obj **result) {
- *result= Tcl_NewStringObj(hbytes_data(&hex), hbytes_len(&hex));
- return TCL_OK;
+ if (ferror(urandom)) {
+ return cht_posixerr(ip,errno,"read " URANDOM);
+ } else {
+ assert(feof(urandom));
+ return cht_staticerr(ip, URANDOM " gave eof!", 0);
+ }
}
-int do_hbytes_length(ClientData cd, Tcl_Interp *ip,
- HBytes_Value v, int *result) {
- *result= hbytes_len(&v);
- return TCL_OK;
-}
+void cht_prepare__basic(Tcl_Interp *ip) {
+ static int prepared;
-int do__hbytes(ClientData cd, Tcl_Interp *ip,
- const HBytes_SubCommand *subcmd,
- int objc, Tcl_Obj *const *objv) {
- return subcmd->func(0,ip,objc,objv);
+ if (prepared) return;
+ Tcl_RegisterObjType(&cht_tabledataid_nearlytype);
+ Tcl_RegisterObjType(&cht_enum_nearlytype);
+ Tcl_RegisterObjType(&cht_enum1_nearlytype);
+ prepared= 1;
}
-int Hbytes_Init(Tcl_Interp *ip) {
- Tcl_RegisterObjType(&hbytes_type);
- Tcl_RegisterObjType(&enum_nearlytype);
- Tcl_RegisterObjType(&enum1_nearlytype);
- Tcl_CreateObjCommand(ip,"hbytes", pa__hbytes,0,0);
- return TCL_OK;
+void cht_setup__commands(Tcl_Interp *ip, const TopLevel_Command *cmds) {
+ const TopLevel_Command *cmd;
+
+ for (cmd= cmds;
+ cmd->name;
+ cmd++)
+ Tcl_CreateObjCommand(ip, (char*)cmd->name, cmd->func, 0,0);
}
~ian / chiark-tcl.git / blobdiff