ref: fb7dd4b3a868cb8987049c95bb32e6425a73c8b9
dir: /appl/lib/tcl_string.b/
implement TclLib;
include "sys.m";
sys: Sys;
include "draw.m";
include "tk.m";
include "bufio.m";
bufmod : Bufio;
Iobuf : import bufmod;
include "string.m";
str : String;
include "tcl.m";
include "tcllib.m";
error : int;
started : int;
valid_commands:=array[] of {"format","string"};
about() : array of string{
return valid_commands;
}
init(){
started=1;
sys=load Sys Sys->PATH;
}
exec(tcl : ref Tcl_Core->TclData,argv : array of string) : (int,string) {
if (tcl.context==nil);
if (!started) init();
error=0;
str=load String String->PATH;
if (str==nil)
return(1,"String module not loaded.");
if (len argv==1 && argv[0]=="string")
return (error,
notify(1,"string option arg ?arg ...?"));
case argv[0]{
"format" =>
return (error,do_format(argv));
"string" =>
return (error,do_string(argv));
}
return (1,nil);
}
do_string(argv : array of string) : string{
case argv[1]{
"compare" =>
if (len argv == 4){
i:= - (argv[2]<argv[3])+ (argv[2]>argv[3]);
return string i;
}
return notify(1,
"string compare string1 string2");
"first" =>
return nil;
"last" =>
return nil;
"index" =>
if (len argv == 4){
if (len argv[2] > int argv[3])
return argv[2][int argv[3]:int argv[3]+1];
return nil;
}
return notify(1,
"string index string charIndex");
"length" =>
if (len argv==3)
return string len argv[2];
return notify(1,"string length string");
"match" =>
return nil;
"range" =>
if (len argv==5){
end :int;
if (argv[4]=="end")
end=len argv[2];
else
end=int argv[4];
if (end>len argv[2]) end=len argv[2];
beg:=int argv[3];
if (beg<0) beg=0;
if (beg>end)
return nil;
return argv[2][int argv[3]:end];
}
return notify(1,
"string range string first last");
"tolower" =>
if (len argv==3)
return str->tolower(argv[2]);
return notify(1,"string tolower string");
"toupper" =>
if (len argv==3)
return str->tolower(argv[2]);
return notify(1,"string tolower string");
"trim" =>
return nil;
"trimleft" =>
return nil;
"trimright" =>
return nil;
"wordend" =>
return nil;
"wordstart" =>
return nil;
}
return nil;
}
do_format(argv : array of string) : string {
retval,num1,num2,rest,curfm : string;
i,j : int;
if (len argv==1)
return notify(1,
"format formatString ?arg arg ...?");
j=2;
i1:=-1;
i2:=-1;
(retval,rest)=str->splitl(argv[1],"%");
do {
(curfm,rest)=str->splitl(rest[1:],"%");
i=0;
num1="";
num2="";
if (curfm[i]=='-'){
num1[len num1]=curfm[i];
i++;
}
while(curfm[i]>='0' && curfm[i]<='9'){
num1[len num1]=curfm[i];
i++;
}
if (num1!="")
(i1,nil) = str->toint(num1,10);
if (curfm[i]=='.'){
i++;
while(curfm[i]>='0' && curfm[i]<='9'){
num2[len num2]=curfm[i];
i++;
}
(i2,nil) = str->toint(num2,10);
} else {
i2=i1;
i1=-1;
}
case curfm[i] {
's' =>
retval+=print_string(i1,i2,argv[j]);
'd' =>
retval+=print_int(i1,i2,argv[j]);
'f' =>
retval+=print_float(i1,i2,argv[j]);
'x' =>
retval+=print_hex(i1,i2,argv[j]);
}
j++;
} while (rest!=nil && j<len argv);
return retval;
}
notify(num : int,s : string) : string {
error=1;
case num{
1 =>
return sys->sprint(
"wrong # args: should be \"%s\"",s);
* =>
return s;
}
}
print_string(i1,i2 : int, s : string) : string {
retval : string;
if (i1==-1 && i2==-1)
retval=sys->sprint("%s",s);
if (i1==-1 && i2!=-1)
retval=sys->sprint("%*s",i1,s);
if (i1!=-1 && i2!=-1)
retval=sys->sprint("%*.*s",i1,i2,s);
if (i1!=-1 && i2==-1)
retval=sys->sprint("%.*s",i2,s);
return retval;
}
print_int(i1,i2 : int, s : string) : string {
retval,ret2 : string;
n : int;
(num,nil):=str->toint(s,10);
width:=1;
i:=num;
while((i/=10)!= 0) width++;
if (i2 !=-1 && width<i2) width=i2;
for(i=0;i<width;i++)
retval[len retval]='0';
while(width!=0){
retval[width-1]=num%10+'0';
num/=10;
width--;
}
if (i1 !=-1 && i1>i){
for(n=0;n<i1-i;n++)
ret2[len ret2]=' ';
ret2+=retval;
retval=ret2;
}
return retval;
}
print_float(i1,i2 : int, s : string) : string {
r:= real s;
retval:=sys->sprint("%*.*f",i1,i2,r);
return retval;
}
print_hex(i1,i2 : int, s : string) : string {
retval,ret2 : string;
n : int;
(num,nil):=str->toint(s,10);
width:=1;
i:=num;
while((i/=16)!= 0) width++;
if (i2 !=-1 && width<i2) width=i2;
for(i=0;i<width;i++)
retval[len retval]='0';
while(width!=0){
n=num%16;
if (n>=0 && n<=9)
retval[width-1]=n+'0';
else
retval[width-1]=n+'a'-10;
num/=16;
width--;
}
if (i1 !=-1 && i1>i){
for(n=0;n<i1-i;n++)
ret2[len ret2]=' ';
ret2+=retval;
retval=ret2;
}
return retval;
}