85 lines
1.2 KiB
C
85 lines
1.2 KiB
C
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int printf(const char *fmt,...)
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{
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int i;
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char c;
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void **arg;
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void *ap;
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int w;
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__builtin_va_start(ap,fmt);
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arg=ap;
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for(i=0;fmt[i];i++)
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{
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c=fmt[i];
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if(c=='%')
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{
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w=1;
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again:
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switch(fmt[i+1])
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{
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case 's':
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putstring(*arg);
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arg++;
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i++;
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break;
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case 'c':
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putchar((long)*arg);
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arg++;
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i++;
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break;
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case 'u':
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printbase((long)*arg,w,10,0);
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arg++;
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i++;
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break;
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case 'd':
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printbase((long)*arg,w,10,1);
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arg++;
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i++;
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break;
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case 'l':
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printbase((long)*arg,w,10,0);
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arg++;
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i=i+2;
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break;
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case 'o':
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printbase((long)*arg,w,8,0);
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arg++;
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i++;
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break;
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case 'b':
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printbase((long)*arg,w,2,0);
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arg++;
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i++;
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break;
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case 'p':
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case 'x':
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printbase((long)*arg,w,16,0);
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arg++;
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i++;
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break;
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case '%':
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putchar('%');
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i++;
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break;
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case '0':
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i++;
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case '1' ... '9':
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for(w=0;fmt[i+1]>'0' && fmt[i+1]<='9';i++)
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w=w*10+(fmt[i+1]-'0');
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goto again;
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break;
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default:
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putchar('%');
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break;
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}
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}
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else{
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if(c=='\n') putchar('\r');
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putchar(c);
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}
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}
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return 0;
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}
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