1 /* iconv.c - Convert character encoding 2 * 3 * Copyright 2014 Felix Janda <felix.janda (at) posteo.de> 4 * 5 * See http://pubs.opengroup.org/onlinepubs/9699919799/utilities/iconv.html 6 * 7 * Deviations from posix: no idea how to implement -l 8 9 USE_ICONV(NEWTOY(iconv, "cst:f:", TOYFLAG_USR|TOYFLAG_BIN)) 10 11 config ICONV 12 bool "iconv" 13 default y 14 depends on TOYBOX_ICONV 15 help 16 usage: iconv [-f FROM] [-t TO] [FILE...] 17 18 Convert character encoding of files. 19 20 -c Omit invalid chars 21 -f Convert from (default utf8) 22 -t Convert to (default utf8) 23 */ 24 25 #define FOR_iconv 26 #include "toys.h" 27 #include <iconv.h> 28 29 GLOBALS( 30 char *f, *t; 31 32 void *ic; 33 ) 34 35 static void do_iconv(int fd, char *name) 36 { 37 char *outstart = toybuf+2048; 38 size_t outlen, inlen = 0; 39 int readlen = 1; 40 41 for (;;) { 42 char *in = toybuf, *out = outstart; 43 44 if (readlen && 0>(readlen = read(fd, in+inlen, 2048-inlen))) { 45 perror_msg("read '%s'", name); 46 return; 47 } 48 inlen += readlen; 49 if (!inlen) break; 50 51 outlen = 2048; 52 iconv(TT.ic, &in, &inlen, &out, &outlen); 53 if (in == toybuf) { 54 // Skip first byte of illegal sequence to avoid endless loops 55 if (toys.optflags & FLAG_c) in++; 56 else *(out++) = *(in++); 57 inlen--; 58 } 59 if (out != outstart) xwrite(1, outstart, out-outstart); 60 memmove(toybuf, in, inlen); 61 } 62 } 63 64 void iconv_main(void) 65 { 66 if (!TT.t) TT.t = "utf8"; 67 if (!TT.f) TT.f = "utf8"; 68 69 if ((iconv_t)-1 == (TT.ic = iconv_open(TT.t, TT.f))) 70 perror_exit("%s/%s", TT.t, TT.f); 71 loopfiles(toys.optargs, do_iconv); 72 if (CFG_TOYBOX_FREE) iconv_close(TT.ic); 73 } 74
