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Viewing changes to mk/shell.c

  • Committer: Bazaar Package Importer
  • Author(s): Daniel Baumann
  • Date: 2009-08-20 17:34:06 UTC
  • mfrom: (6.2.2 squeeze)
  • Revision ID: james.westby@ubuntu.com-20090820173406-xpwqa9ruyevvc0ut
Tags: 1:3-3
* Updating maintainer field.
* Updating vcs fields.
* Updating package to standards version 3.8.3.
* Updatin variables writing in rules to consistent style.

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Lines of Context:
mk/shell.c
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#include "mk.h"
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static Shell *shells[] = {
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        &rcshell,
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        &shshell,
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};
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Shell *shelldefault = &shshell;
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Shell *shellt;
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Word *shellcmd;
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typedef struct Shellstack Shellstack;
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struct Shellstack
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{
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        Shell *t;
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        Word *w;
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        Shellstack *next;
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};
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Shellstack *shellstack;
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char*
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setshell(Word *w)
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{
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        int i;
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        if(w->s == nil)
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                return "shell name not found on line";
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        for(i=0; i<nelem(shells); i++)
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                if(shells[i]->matchname(w->s))
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                        break;
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        if(i == nelem(shells))
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                return "cannot determine shell type";
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        shellt = shells[i];
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        shellcmd = w;
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        return nil;
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}
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void
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initshell(void)
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{
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        shellcmd = stow(shelldefault->name);
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        shellt = shelldefault;
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        setvar("MKSHELL", shellcmd);
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}
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void
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pushshell(void)
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{
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        Shellstack *s;
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        /* save */
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        s = Malloc(sizeof *s);
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        s->t = shellt;
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        s->w = shellcmd;
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        s->next = shellstack;
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        shellstack = s;
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        initshell();    /* reset to defaults */
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}
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void
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popshell(void)
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{
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        Shellstack *s;
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        if(shellstack == nil){
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                fprint(2, "internal shellstack error\n");
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                Exit();
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        }
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        s = shellstack;
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        shellstack = s->next;
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        shellt = s->t;
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        shellcmd = s->w;
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        setvar("MKSHELL", shellcmd);
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        free(s);
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}