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Annotation of researchv10no/cmd/mk/export/var.c, revision 1.1

1.1     ! root        1: #include       "mk.h"
        !             2: 
        !             3: setvar(name, value)
        !             4:        char *name;
        !             5:        char *value;
        !             6: {
        !             7:        symlook(name, S_VAR, value)->value = value;
        !             8:        symlook(name, S_MAKEVAR, "");
        !             9: }
        !            10: 
        !            11: static char **nextv;
        !            12: 
        !            13: static void
        !            14: vcopy(s)
        !            15:        register Symtab *s;
        !            16: {
        !            17:        register char **p;
        !            18:        extern char *myenv[];
        !            19: 
        !            20:        if(symlook(s->name, S_NOEXPORT, (char *)0))
        !            21:                return;
        !            22:        for(p = myenv; *p; p++)
        !            23:                if(strcmp(*p, s->name) == 0) return;
        !            24:        if(*nextv)
        !            25:                free(*nextv);
        !            26:        *nextv++ = envpr(s->name, s->value);
        !            27: }
        !            28: 
        !            29: char **
        !            30: vardump(p)
        !            31:        char **p;
        !            32: {
        !            33:        nextv = p;
        !            34:        symtraverse(S_VAR, vcopy);
        !            35:        *nextv = 0;
        !            36:        return(nextv);
        !            37: }
        !            38: 
        !            39: static void
        !            40: print1(s)
        !            41:        register Symtab *s;
        !            42: {
        !            43:        Fprint(1, "\t%s='%s'\n", s->name, s->value);
        !            44: }
        !            45: 
        !            46: dumpv(s)
        !            47:        char *s;
        !            48: {
        !            49:        Fprint(1, "%s:\n", s);
        !            50:        symtraverse(S_VAR, print1);
        !            51: }
        !            52: 
        !            53: char *
        !            54: envpr(name, value)
        !            55:        register char *name;
        !            56:        register char *value;
        !            57: {
        !            58:        char buf[BIGBLOCK];
        !            59: 
        !            60:        sprint(buf, "%s=", name);
        !            61:        strcpy(strchr(buf, 0), value);
        !            62:        return(strdup(buf));
        !            63: }
        !            64: 
        !            65: #include       <ctype.h>
        !            66: 
        !            67: char *
        !            68: shname(s)
        !            69:        char *s;
        !            70: {
        !            71:        register unsigned char *a = (unsigned char *)s;
        !            72: 
        !            73:        /* always go one !! */
        !            74:        a++;
        !            75:        while(isalnum(*a) || (*a == '_')) a++;
        !            76:        return((char *)a);
        !            77: }

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