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A null ifs now causes every character to be considered a separate field in

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a for loop. You can now pass a field separator string to a for loop that
will override the value of ifs.  Added the field.get command that returns
a single field from a list.  It also can take a field separator string that
overrides ifs.
This commit is contained in:
Brian Koropoff 2002-10-22 05:34:59 +00:00
parent 1d96156936
commit 9fd055e183
1 changed files with 53 additions and 3 deletions
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56
libs/util/gib_builtin.c
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@ -281,6 +281,43 @@ GIB_While_f (void)
}
}
void
GIB_Field_Get_f (void)
{
unsigned int field;
char *list, *end;
const char *ifs;
if (GIB_Argc() < 3 || GIB_Argc() > 4) {
Cbuf_Error ("syntax",
"field.get: invalid syntax\n"
"usage: field.get list element [ifs]"
);
return;
}
field = atoi (GIB_Argv(2));
if (GIB_Argc() == 4)
ifs = GIB_Argv (3);
else if (!(ifs = GIB_Var_Get_Local (cbuf_active, "ifs")))
ifs = " \t\n";
for (list = GIB_Argv(1); *list && strchr(ifs, *list); list++);
while (field) {
while (!strchr(ifs, *list))
list++;
while (*list && strchr(ifs, *list))
list++;
if (!*list) {
GIB_Return ("");
return;
}
field--;
}
for (end = list; !strchr(ifs, *end); end++);
*end = 0;
GIB_Return (list);
}
void
GIB___For_f (void)
{
@ -289,6 +326,14 @@ GIB___For_f (void)
Cbuf_InsertText (cbuf_active, "break;");
return;
}
if (!GIB_DATA(cbuf_active)->loop_ifs_p[0]) {
end = GIB_DATA(cbuf_active)->loop_list_p;
old = end[1];
end[1] = 0;
GIB_Var_Set_Local (cbuf_active, GIB_DATA(cbuf_active)->loop_var_p, GIB_DATA(cbuf_active)->loop_list_p++);
end[1] = old;
return;
}
for (end = GIB_DATA(cbuf_active)->loop_list_p; !strchr(GIB_DATA(cbuf_active)->loop_ifs_p, *end); end++);
if (*end) {
old = *end;
@ -305,7 +350,9 @@ GIB___For_f (void)
void
GIB_For_f (void)
{
if (GIB_Argc() != 5 || strcmp ("in", GIB_Argv (2))) {
if (strcmp ("in", GIB_Argv (2)) ||
(GIB_Argc() == 7 && strcmp ("by", GIB_Argv(4))) ||
(GIB_Argc() != 5 && GIB_Argc() != 7)) {
Cbuf_Error ("syntax",
"for: invalid syntax\n"
"usage: for variable in list {program}"
@ -326,7 +373,9 @@ GIB_For_f (void)
// Store all for-loop data in one big buffer (easy to clean up)
dstring_appendstr (GIB_DATA(sub)->loop_data, GIB_Argv(3));
dstring_append (GIB_DATA(sub)->loop_data, GIB_Argv(1), strlen(GIB_Argv(1))+1);
if (!(ifs = GIB_Var_Get_Local (cbuf_active, "ifs")))
if (GIB_Argc() == 7)
ifs = GIB_Argv (5);
else if (!(ifs = GIB_Var_Get_Local (cbuf_active, "ifs")))
ifs = " \n\t";
dstring_append (GIB_DATA(sub)->loop_data, ifs, strlen(ifs)+1);
// Store pointers to data
@ -337,7 +386,7 @@ GIB_For_f (void)
GIB_DATA(sub)->loop_var_p = GIB_DATA(sub)->loop_data->str + strlen(GIB_Argv(3))+1; // Var to use
GIB_DATA(sub)->loop_ifs_p = GIB_DATA(sub)->loop_var_p + strlen(GIB_Argv(1))+1; // Internal field separator
dstring_appendstr (GIB_DATA(sub)->loop_program, "__for;");
dstring_appendstr (GIB_DATA(sub)->loop_program, GIB_Argv(4));
dstring_appendstr (GIB_DATA(sub)->loop_program, GIB_Argc() == 7 ? GIB_Argv (6) : GIB_Argv(4));
Cbuf_AddText (sub, GIB_DATA(sub)->loop_program->str);
cbuf_active->state = CBUF_STATE_STACK;
}
@ -722,6 +771,7 @@ GIB_Builtin_Init (void)
GIB_Builtin_Add ("if", GIB_If_f, GIB_BUILTIN_FIRSTONLY);
GIB_Builtin_Add ("ifnot", GIB_If_f, GIB_BUILTIN_FIRSTONLY);
GIB_Builtin_Add ("while", GIB_While_f, GIB_BUILTIN_NOPROCESS);
GIB_Builtin_Add ("field.get", GIB_Field_Get_f, GIB_BUILTIN_NORMAL);
GIB_Builtin_Add ("for", GIB_For_f, GIB_BUILTIN_NORMAL);
GIB_Builtin_Add ("__for", GIB___For_f, GIB_BUILTIN_NORMAL);
GIB_Builtin_Add ("break", GIB_Break_f, GIB_BUILTIN_NORMAL);