diff options
Diffstat (limited to 'toys/posix/od.c')
| -rw-r--r-- | toys/posix/od.c | 179 |
1 files changed, 99 insertions, 80 deletions
diff --git a/toys/posix/od.c b/toys/posix/od.c index 01f14b72..6853a9b1 100644 --- a/toys/posix/od.c +++ b/toys/posix/od.c @@ -45,12 +45,88 @@ struct odtype { int size; }; +static int od_out_t(struct odtype *t, char *buf, int *offset) +{ + unsigned k; + int throw = 0, pad = 0; + + // Handle ascii + if (t->type < 2) { + char c = TT.buf[(*offset)++]; + pad += 4; + + if (!t->type) { + c &= 127; + if (c<=32) sprintf(buf, "%.3s", ascii+(3*c)); + else if (c==127) strcpy(buf, "del"); + else sprintf(buf, "%c", c); + } else { + char *bfnrtav = "\b\f\n\r\t\a\v", *s = strchr(bfnrtav, c); + if (s) sprintf(buf, "\\%c", "bfnrtav0"[s-bfnrtav]); + else if (c < 32 || c >= 127) sprintf(buf, "%03o", c); + else { + // TODO: this should be UTF8 aware. + sprintf(buf, "%c", c); + } + } + } else if (CFG_TOYBOX_FLOAT && t->type == 6) { + long double ld; + union {float f; double d; long double ld;} fdl; + + memcpy(&fdl, TT.buf+*offset, t->size); + *offset += t->size; + if (sizeof(float) == t->size) { + ld = fdl.f; + pad += (throw = 8)+7; + } else if (sizeof(double) == t->size) { + ld = fdl.d; + pad += (throw = 17)+8; + } else if (sizeof(long double) == t->size) { + ld = fdl.ld; + pad += (throw = 21)+9; + } else error_exit("bad -tf '%d'", t->size); + + sprintf(buf, "%.*Le", throw, ld); + // Integer types + } else { + unsigned long long ll = 0, or; + char *c[] = {"%*lld", "%*llu", "%0*llo", "%0*llx"}, + *class = c[t->type-2]; + + // Work out width of field + if (t->size == 8) { + or = -1LL; + if (t->type == 2) or >>= 1; + } else or = (1LL<<(8*t->size))-1; + throw = sprintf(buf, class, 0, or); + + // Accumulate integer based on size argument + for (k=0; k < t->size; k++) { + or = TT.buf[(*offset)++]; + ll |= or << (8*(IS_BIG_ENDIAN ? t->size-k-1 : k)); + } + + // Handle negative values + if (t->type == 2) { + or = sizeof(or) - t->size; + throw++; + if (or && (ll & (1l<<((8*t->size)-1)))) + ll |= ((or<<(8*or))-1) << (8*t->size); + } + + sprintf(buf, class, throw, ll); + pad += throw+1; + } + + return pad; +} + static void od_outline(void) { unsigned flags = toys.optflags; - char *abases[] = {"", "%07d", "%07o", "%06x"}; - struct odtype *types = (struct odtype *)toybuf, *t; - int i, len; + char buf[128], *abases[] = {"", "%07d", "%07o", "%06x"}; + struct odtype *types = (struct odtype *)toybuf; + int i, j, len, pad; if (TT.leftover<16) memset(TT.buf+TT.leftover, 0, 16-TT.leftover); @@ -78,86 +154,27 @@ static void od_outline(void) TT.leftover = 0; if (TT.star) return; + // Find largest "pad" of the output types. + for (i = pad = 0; i<TT.types; i++) { + int bytes = 0; + + // If more than one byte of input consumed, average rounding up. + j = od_out_t(types+i, buf, &bytes); + j = (j+bytes-1)/bytes; + + if (j > pad) pad = j; + } + // For each output type, print one line for (i=0; i<TT.types; i++) { - int j = 0, pad = i ? 8 : 0; - char buf[128]; - - t = types+i; - while (j<len) { - unsigned k; - int throw = 0; - - // Handle ascii - if (t->type < 2) { - char c = TT.buf[j++]; - pad += 4; - - if (!t->type) { - c &= 127; - if (c<=32) sprintf(buf, "%.3s", ascii+(3*c)); - else if (c==127) strcpy(buf, "del"); - else sprintf(buf, "%c", c); - } else { - char *bfnrtav = "\b\f\n\r\t\a\v", *s = strchr(bfnrtav, c); - if (s) sprintf(buf, "\\%c", "bfnrtav0"[s-bfnrtav]); - else if (c < 32 || c >= 127) sprintf(buf, "%03o", c); - else { - // TODO: this should be UTF8 aware. - sprintf(buf, "%c", c); - } - } - } else if (CFG_TOYBOX_FLOAT && t->type == 6) { - long double ld; - union {float f; double d; long double ld;} fdl; - - memcpy(&fdl, TT.buf+j, t->size); - j += t->size; - if (sizeof(float) == t->size) { - ld = fdl.f; - pad += (throw = 8)+7; - } else if (sizeof(double) == t->size) { - ld = fdl.d; - pad += (throw = 17)+8; - } else if (sizeof(long double) == t->size) { - ld = fdl.ld; - pad += (throw = 21)+9; - } else error_exit("bad -tf '%d'", t->size); - - sprintf(buf, "%.*Le", throw, ld); - // Integer types - } else { - unsigned long long ll = 0, or; - char *c[] = {"%*lld", "%*llu", "%0*llo", "%0*llx"}, - *class = c[t->type-2]; - - // Work out width of field - if (t->size == 8) { - or = -1LL; - if (t->type == 2) or >>= 1; - } else or = (1LL<<(8*t->size))-1; - throw = sprintf(buf, class, 0, or); - - // Accumulate integer based on size argument - for (k=0; k < t->size; k++) { - or = TT.buf[j++]; - ll |= or << (8*(IS_BIG_ENDIAN ? t->size-k-1 : k)); - } - - // Handle negative values - if (t->type == 2) { - or = sizeof(or) - t->size; - throw++; - if (or && (ll & (1l<<((8*t->size)-1)))) - ll |= ((or<<(8*or))-1) << (8*t->size); - } - - sprintf(buf, class, throw, ll); - pad += throw+1; - } - xprintf("%*s", pad, buf); - pad = 0; + for (j = 0; j<len;) { + int bytes = j; + + // pad for as many bytes as were consumed, and indent non-numbered lines + od_out_t(types+i, buf, &bytes); + xprintf("%*s", pad*(bytes-j) + 7*(!!i)*!j, buf); + j = bytes; } xputc('\n'); } @@ -166,6 +183,7 @@ static void od_outline(void) TT.buf = (char *)((TT.buf == (char *)TT.bufs) ? TT.bufs+2 : TT.bufs); } +// Loop through input files static void do_od(int fd, char *name) { // Skip input, possibly more than one entire file. @@ -198,6 +216,7 @@ static void do_od(int fd, char *name) } } +// Handle one -t argument (including implicit ones) static void append_base(char *base) { char *s = base; |