minibidi.c

putty

     * modified by the previous phase.
     */
    j=count-1;
    while (j>0 && (getType(line[j].wc) == WS)) {
	j--;
    }
    if (j < (count-1)) {
	for (j++; j<count; j++)
	    levels[j] = paragraphLevel;
    }
    for (i=0; i<count; i++) {
	tempType = getType(line[i].wc);
	if (tempType == WS) {
	    j=i;
	    while (j<count && (getType(line[j].wc) == WS)) {
		j++;
	    }
	    if (j==count || getType(line[j].wc) == B ||
                getType(line[j].wc) == S) {
		for (j--; j>=i ; j--) {
		    levels[j] = paragraphLevel;
		}
	    }
	} else if (tempType == B || tempType == S) {
            levels[i] = paragraphLevel;
        }
    }

    /* Rule (L4) NOT IMPLEMENTED
     * L4. A character that possesses the mirrored property as specified by
     * Section 4.7, Mirrored, must be depicted by a mirrored glyph if the
     * resolved directionality of that character is R.
     */
    /* Note: this is implemented before L2 for efficiency */
    for (i=0; i<count; i++)
	if ((levels[i] % 2) == 1)
	    doMirror(&line[i].wc);

    /* Rule (L2)
     * L2. From the highest level found in the text to the lowest odd level on
     * each line, including intermediate levels not actually present in the
     * text, reverse any contiguous sequence of characters that are at that
     * level or higher
     */
    /* we flip the character string and leave the level array */
    imax = 0;
    i=0;
    tempType = levels[0];
    while (i < count) {
	if (levels[i] > tempType) {
	    tempType = levels[i];
	    imax=i;
	}
	i++;
    }
    /* maximum level in tempType, its index in imax. */
    while (tempType > 0) {     /* loop from highest level to the least odd, */
        /* which i assume is 1 */
	flipThisRun(line, levels, tempType, count);
	tempType--;
    }

    /* Rule (L3) NOT IMPLEMENTED
     * L3. Combining marks applied to a right-to-left base character will at
     * this point precede their base character. If the rendering engine
     * expects them to follow the base characters in the final display
     * process, then the ordering of the marks and the base character must
     * be reversed.
     */
    sfree(types);
    sfree(levels);
    return R;
}


/*
 * Bad, Horrible function
 * takes a pointer to a character that is checked for
 * having a mirror glyph.
 */
void doMirror(wchar_t* ch)
{
    if ((*ch & 0xFF00) == 0) {
	switch (*ch) {
	  case 0x0028: *ch = 0x0029; break;
	  case 0x0029: *ch = 0x0028; break;
	  case 0x003C: *ch = 0x003E; break;
	  case 0x003E: *ch = 0x003C; break;
	  case 0x005B: *ch = 0x005D; break;
	  case 0x005D: *ch = 0x005B; break;
	  case 0x007B: *ch = 0x007D; break;
	  case 0x007D: *ch = 0x007B; break;
	  case 0x00AB: *ch = 0x00BB; break;
	  case 0x00BB: *ch = 0x00AB; break;
	}
    } else if ((*ch & 0xFF00) == 0x2000) {
	switch (*ch) {
	  case 0x2039: *ch = 0x203A; break;
	  case 0x203A: *ch = 0x2039; break;
	  case 0x2045: *ch = 0x2046; break;
	  case 0x2046: *ch = 0x2045; break;
	  case 0x207D: *ch = 0x207E; break;
	  case 0x207E: *ch = 0x207D; break;
	  case 0x208D: *ch = 0x208E; break;
	  case 0x208E: *ch = 0x208D; break;
	}
    } else if ((*ch & 0xFF00) == 0x2200) {
	switch (*ch) {
	  case 0x2208: *ch = 0x220B; break;
	  case 0x2209: *ch = 0x220C; break;
	  case 0x220A: *ch = 0x220D; break;
	  case 0x220B: *ch = 0x2208; break;
	  case 0x220C: *ch = 0x2209; break;
	  case 0x220D: *ch = 0x220A; break;
	  case 0x2215: *ch = 0x29F5; break;
	  case 0x223C: *ch = 0x223D; break;
	  case 0x223D: *ch = 0x223C; break;
	  case 0x2243: *ch = 0x22CD; break;
	  case 0x2252: *ch = 0x2253; break;
	  case 0x2253: *ch = 0x2252; break;
	  case 0x2254: *ch = 0x2255; break;
	  case 0x2255: *ch = 0x2254; break;
	  case 0x2264: *ch = 0x2265; break;
	  case 0x2265: *ch = 0x2264; break;
	  case 0x2266: *ch = 0x2267; break;
	  case 0x2267: *ch = 0x2266; break;
	  case 0x2268: *ch = 0x2269; break;
	  case 0x2269: *ch = 0x2268; break;
	  case 0x226A: *ch = 0x226B; break;
	  case 0x226B: *ch = 0x226A; break;
	  case 0x226E: *ch = 0x226F; break;
	  case 0x226F: *ch = 0x226E; break;
	  case 0x2270: *ch = 0x2271; break;
	  case 0x2271: *ch = 0x2270; break;
	  case 0x2272: *ch = 0x2273; break;
	  case 0x2273: *ch = 0x2272; break;
	  case 0x2274: *ch = 0x2275; break;
	  case 0x2275: *ch = 0x2274; break;
	  case 0x2276: *ch = 0x2277; break;
	  case 0x2277: *ch = 0x2276; break;
	  case 0x2278: *ch = 0x2279; break;
	  case 0x2279: *ch = 0x2278; break;
	  case 0x227A: *ch = 0x227B; break;
	  case 0x227B: *ch = 0x227A; break;
	  case 0x227C: *ch = 0x227D; break;
	  case 0x227D: *ch = 0x227C; break;
	  case 0x227E: *ch = 0x227F; break;
	  case 0x227F: *ch = 0x227E; break;
	  case 0x2280: *ch = 0x2281; break;
	  case 0x2281: *ch = 0x2280; break;
	  case 0x2282: *ch = 0x2283; break;
	  case 0x2283: *ch = 0x2282; break;
	  case 0x2284: *ch = 0x2285; break;
	  case 0x2285: *ch = 0x2284; break;
	  case 0x2286: *ch = 0x2287; break;
	  case 0x2287: *ch = 0x2286; break;
	  case 0x2288: *ch = 0x2289; break;
	  case 0x2289: *ch = 0x2288; break;
	  case 0x228A: *ch = 0x228B; break;
	  case 0x228B: *ch = 0x228A; break;
	  case 0x228F: *ch = 0x2290; break;
	  case 0x2290: *ch = 0x228F; break;
	  case 0x2291: *ch = 0x2292; break;
	  case 0x2292: *ch = 0x2291; break;
	  case 0x2298: *ch = 0x29B8; break;
	  case 0x22A2: *ch = 0x22A3; break;
	  case 0x22A3: *ch = 0x22A2; break;
	  case 0x22A6: *ch = 0x2ADE; break;
	  case 0x22A8: *ch = 0x2AE4; break;
	  case 0x22A9: *ch = 0x2AE3; break;
	  case 0x22AB: *ch = 0x2AE5; break;
	  case 0x22B0: *ch = 0x22B1; break;
	  case 0x22B1: *ch = 0x22B0; break;
	  case 0x22B2: *ch = 0x22B3; break;
	  case 0x22B3: *ch = 0x22B2; break;
	  case 0x22B4: *ch = 0x22B5; break;
	  case 0x22B5: *ch = 0x22B4; break;
	  case 0x22B6: *ch = 0x22B7; break;
	  case 0x22B7: *ch = 0x22B6; break;
	  case 0x22C9: *ch = 0x22CA; break;
	  case 0x22CA: *ch = 0x22C9; break;
	  case 0x22CB: *ch = 0x22CC; break;
	  case 0x22CC: *ch = 0x22CB; break;
	  case 0x22CD: *ch = 0x2243; break;
	  case 0x22D0: *ch = 0x22D1; break;
	  case 0x22D1: *ch = 0x22D0; break;
	  case 0x22D6: *ch = 0x22D7; break;
	  case 0x22D7: *ch = 0x22D6; break;
	  case 0x22D8: *ch = 0x22D9; break;
	  case 0x22D9: *ch = 0x22D8; break;
	  case 0x22DA: *ch = 0x22DB; break;
	  case 0x22DB: *ch = 0x22DA; break;
	  case 0x22DC: *ch = 0x22DD; break;
	  case 0x22DD: *ch = 0x22DC; break;
	  case 0x22DE: *ch = 0x22DF; break;
	  case 0x22DF: *ch = 0x22DE; break;
	  case 0x22E0: *ch = 0x22E1; break;
	  case 0x22E1: *ch = 0x22E0; break;
	  case 0x22E2: *ch = 0x22E3; break;
	  case 0x22E3: *ch = 0x22E2; break;
	  case 0x22E4: *ch = 0x22E5; break;
	  case 0x22E5: *ch = 0x22E4; break;
	  case 0x22E6: *ch = 0x22E7; break;
	  case 0x22E7: *ch = 0x22E6; break;
	  case 0x22E8: *ch = 0x22E9; break;
	  case 0x22E9: *ch = 0x22E8; break;
	  case 0x22EA: *ch = 0x22EB; break;
	  case 0x22EB: *ch = 0x22EA; break;
	  case 0x22EC: *ch = 0x22ED; break;
	  case 0x22ED: *ch = 0x22EC; break;
	  case 0x22F0: *ch = 0x22F1; break;
	  case 0x22F1: *ch = 0x22F0; break;
	  case 0x22F2: *ch = 0x22FA; break;
	  case 0x22F3: *ch = 0x22FB; break;
	  case 0x22F4: *ch = 0x22FC; break;
	  case 0x22F6: *ch = 0x22FD; break;
	  case 0x22F7: *ch = 0x22FE; break;
	  case 0x22FA: *ch = 0x22F2; break;
	  case 0x22FB: *ch = 0x22F3; break;
	  case 0x22FC: *ch = 0x22F4; break;
	  case 0x22FD: *ch = 0x22F6; break;
	  case 0x22FE: *ch = 0x22F7; break;
	}
    } else if ((*ch & 0xFF00) == 0x2300) {
        switch (*ch) {
          case 0x2308: *ch = 0x2309; break;
          case 0x2309: *ch = 0x2308; break;
          case 0x230A: *ch = 0x230B; break;
          case 0x230B: *ch = 0x230A; break;
          case 0x2329: *ch = 0x232A; break;
          case 0x232A: *ch = 0x2329; break;
        }
    } else if ((*ch & 0xFF00) == 0x2700) {
	switch (*ch) {
	  case 0x2768: *ch = 0x2769; break;
	  case 0x2769: *ch = 0x2768; break;
	  case 0x276A: *ch = 0x276B; break;
	  case 0x276B: *ch = 0x276A; break;
	  case 0x276C: *ch = 0x276D; break;
	  case 0x276D: *ch = 0x276C; break;
	  case 0x276E: *ch = 0x276F; break;
	  case 0x276F: *ch = 0x276E; break;
	  case 0x2770: *ch = 0x2771; break;
	  case 0x2771: *ch = 0x2770; break;
	  case 0x2772: *ch = 0x2773; break;
	  case 0x2773: *ch = 0x2772; break;
	  case 0x2774: *ch = 0x2775; break;
	  case 0x2775: *ch = 0x2774; break;
	  case 0x27D5: *ch = 0x27D6; break;
	  case 0x27D6: *ch = 0x27D5; break;
	  case 0x27DD: *ch = 0x27DE; break;
	  case 0x27DE: *ch = 0x27DD; break;
	  case 0x27E2: *ch = 0x27E3; break;
	  case 0x27E3: *ch = 0x27E2; break;
	  case 0x27E4: *ch = 0x27E5; break;
	  case 0x27E5: *ch = 0x27E4; break;
	  case 0x27E6: *ch = 0x27E7; break;
	  case 0x27E7: *ch = 0x27E6; break;
	  case 0x27E8: *ch = 0x27E9; break;
	  case 0x27E9: *ch = 0x27E8; break;
	  case 0x27EA: *ch = 0x27EB; break;
	  case 0x27EB: *ch = 0x27EA; break;
	}
    } else if ((*ch & 0xFF00) == 0x2900) {
	switch (*ch) {
	  case 0x2983: *ch = 0x2984; break;
	  case 0x2984: *ch = 0x2983; break;
	  case 0x2985: *ch = 0x2986; break;
	  case 0x2986: *ch = 0x2985; break;
	  case 0x2987: *ch = 0x2988; break;
	  case 0x2988: *ch = 0x2987; break;
	  case 0x2989: *ch = 0x298A; break;
	  case 0x298A: *ch = 0x2989; break;
	  case 0x298B: *ch = 0x298C; break;
	  case 0x298C: *ch = 0x298B; break;
	  case 0x298D: *ch = 0x2990; break;
	  case 0x298E: *ch = 0x298F; break;
	  case 0x298F: *ch = 0x298E; break;
	  case 0x2990: *ch = 0x298D; break;
	  case 0x2991: *ch = 0x2992; break;
	  case 0x2992: *ch = 0x2991; break;
	  case 0x2993: *ch = 0x2994; break;
	  case 0x2994: *ch = 0x2993; break;
	  case 0x2995: *ch = 0x2996; break;
	  case 0x2996: *ch = 0x2995; break;
	  case 0x2997: *ch = 0x2998; break;
	  case 0x2998: *ch = 0x2997; break;
	  case 0x29B8: *ch = 0x2298; break;
	  case 0x29C0: *ch = 0x29C1; break;
	  case 0x29C1: *ch = 0x29C0; break;
	  case 0x29C4: *ch = 0x29C5; break;
	  case 0x29C5: *ch = 0x29C4; break;
	  case 0x29CF: *ch = 0x29D0; break;
	  case 0x29D0: *ch = 0x29CF; break;
	  case 0x29D1: *ch = 0x29D2; break;
	  case 0x29D2: *ch = 0x29D1; break;
	  case 0x29D4: *ch = 0x29D5; break;
	  case 0x29D5: *ch = 0x29D4; break;
	  case 0x29D8: *ch = 0x29D9; break;
	  case 0x29D9: *ch = 0x29D8; break;
	  case 0x29DA: *ch = 0x29DB; break;
	  case 0x29DB: *ch = 0x29DA; break;
	  case 0x29F5: *ch = 0x2215; break;
	  case 0x29F8: *ch = 0x29F9; break;
	  case 0x29F9: *ch = 0x29F8; break;
	  case 0x29FC: *ch = 0x29FD; break;
	  case 0x29FD: *ch = 0x29FC; break;
	}
    } else if ((*ch & 0xFF00) == 0x2A00) {
	switch (*ch) {
	  case 0x2A2B: *ch = 0x2A2C; break;
	  case 0x2A2C: *ch = 0x2A2B; break;
	  case 0x2A2D: *ch = 0x2A2C; break;
	  case 0x2A2E: *ch = 0x2A2D; break;
	  case 0x2A34: *ch = 0x2A35; break;
	  case 0x2A35: *ch = 0x2A34; break;
	  case 0x2A3C: *ch = 0x2A3D; break;
	  case 0x2A3D: *ch = 0x2A3C; break;
	  case 0x2A64: *ch = 0x2A65; break;
	  case 0x2A65: *ch = 0x2A64; break;
	  case 0x2A79: *ch = 0x2A7A; break;
	  case 0x2A7A: *ch = 0x2A79; break;
	  case 0x2A7D: *ch = 0x2A7E; break;
	  case 0x2A7E: *ch = 0x2A7D; break;
	  case 0x2A7F: *ch = 0x2A80; break;
	  case 0x2A80: *ch = 0x2A7F; break;
	  case 0x2A81: *ch = 0x2A82; break;
	  case 0x2A82: *ch = 0x2A81; break;
	  case 0x2A83: *ch = 0x2A84; break;
	  case 0x2A84: *ch = 0x2A83; break;
	  case 0x2A8B: *ch = 0x2A8C; break;
	  case 0x2A8C: *ch = 0x2A8B; break;
	  case 0x2A91: *ch = 0x2A92; break;
	  case 0x2A92: *ch = 0x2A91; break;
	  case 0x2A93: *ch = 0x2A94; break;
	  case 0x2A94: *ch = 0x2A93; break;
	  case 0x2A95: *ch = 0x2A96; break;
	  case 0x2A96: *ch = 0x2A95; break;
	  case 0x2A97: *ch = 0x2A98; break;
	  case 0x2A98: *ch = 0x2A97; break;
	  case 0x2A99: *ch = 0x2A9A; break;
	  case 0x2A9A: *ch = 0x2A99; break;
	  case 0x2A9B: *ch = 0x2A9C; break;
	  case 0x2A9C: *ch = 0x2A9B; break;
	  case 0x2AA1: *ch = 0x2AA2; break;
	  case 0x2AA2: *ch = 0x2AA1; break;
	  case 0x2AA6: *ch = 0x2AA7; break;
	  case 0x2AA7: *ch = 0x2AA6; break;
	  case 0x2AA8: *ch = 0x2AA9; break;
	  case 0x2AA9: *ch = 0x2AA8; break;
	  case 0x2AAA: *ch = 0x2AAB; break;
	  case 0x2AAB: *ch = 0x2AAA; break;
	  case 0x2AAC: *ch = 0x2AAD; break;
	  case 0x2AAD: *ch = 0x2AAC; break;
	  case 0x2AAF: *ch = 0x2AB0; break;
	  case 0x2AB0: *ch = 0x2AAF; break;
	  case 0x2AB3: *ch = 0x2AB4; break;
	  case 0x2AB4: *ch = 0x2AB3; break;
	  case 0x2ABB: *ch = 0x2ABC; break;
	  case 0x2ABC: *ch = 0x2ABB; break;
	  case 0x2ABD: *ch = 0x2ABE; break;
	  case 0x2ABE: *ch = 0x2ABD; break;
	  case 0x2ABF: *ch = 0x2AC0; break;
	  case 0x2AC0: *ch = 0x2ABF; break;
	  case 0x2AC1: *ch = 0x2AC2; break;
	  case 0x2AC2: *ch = 0x2AC1; break;
	  case 0x2AC3: *ch = 0x2AC4; break;
	  case 0x2AC4: *ch = 0x2AC3; break;
	  case 0x2AC5: *ch = 0x2AC6; break;
	  case 0x2AC6: *ch = 0x2AC5; break;
	  case 0x2ACD: *ch = 0x2ACE; break;
	  case 0x2ACE: *ch = 0x2ACD; break;
	  case 0x2ACF: *ch = 0x2AD0; break;
	  case 0x2AD0: *ch = 0x2ACF; break;
	  case 0x2AD1: *ch = 0x2AD2; break;
	  case 0x2AD2: *ch = 0x2AD1; break;
	  case 0x2AD3: *ch = 0x2AD4; break;
	  case 0x2AD4: *ch = 0x2AD3; break;
	  case 0x2AD5: *ch = 0x2AD6; break;
	  case 0x2AD6: *ch = 0x2AD5; break;
	  case 0x2ADE: *ch = 0x22A6; break;
	  case 0x2AE3: *ch = 0x22A9; break;
	  case 0x2AE4: *ch = 0x22A8; break;
	  case 0x2AE5: *ch = 0x22AB; break;
	  case 0x2AEC: *ch = 0x2AED; break;
	  case 0x2AED: *ch = 0x2AEC; break;
	  case 0x2AF7: *ch = 0x2AF8; break;
	  case 0x2AF8: *ch = 0x2AF7; break;
	  case 0x2AF9: *ch = 0x2AFA; break;
	  case 0x2AFA: *ch = 0x2AF9; break;
	}
    } else if ((*ch & 0xFF00) == 0x3000) {
	switch (*ch) {
	  case 0x3008: *ch = 0x3009; break;
	  case 0x3009: *ch = 0x3008; break;
	  case 0x300A: *ch = 0x300B; break;
	  case 0x300B: *ch = 0x300A; break;
	  case 0x300C: *ch = 0x300D; break;
	  case 0x300D: *ch = 0x300C; break;
	  case 0x300E: *ch = 0x300F; break;
	  case 0x300F: *ch = 0x300E; break;
	  case 0x3010: *ch = 0x3011; break;
	  case 0x3011: *ch = 0x3010; break;
	  case 0x3014: *ch = 0x3015; break;
	  case 0x3015: *ch = 0x3014; break;
	  case 0x3016: *ch = 0x3017; break;
	  case 0x3017: *ch = 0x3016; break;
	  case 0x3018: *ch = 0x3019; break;
	  case 0x3019: *ch = 0x3018; break;
	  case 0x301A: *ch = 0x301B; break;
	  case 0x301B: *ch = 0x301A; break;
	}
    } else if ((*ch & 0xFF00) == 0xFF00) {
	switch (*ch) {
	  case 0xFF08: *ch = 0xFF09; break;
	  case 0xFF09: *ch = 0xFF08; break;
	  case 0xFF1C: *ch = 0xFF1E; break;
	  case 0xFF1E: *ch = 0xFF1C; break;
	  case 0xFF3B: *ch = 0xFF3D; break;
	  case 0xFF3D: *ch = 0xFF3B; break;
	  case 0xFF5B: *ch = 0xFF5D; break;
	  case 0xFF5D: *ch = 0xFF5B; break;
	  case 0xFF5F: *ch = 0xFF60; break;
	  case 0xFF60: *ch = 0xFF5F; break;
	  case 0xFF62: *ch = 0xFF63; break;
	  case 0xFF63: *ch = 0xFF62; break;
	}
    }
}

#ifdef TEST_GETTYPE

#include <stdio.h>
#include <assert.h>

int main(int argc, char **argv)
{
    static const struct { int type; char *name; } typetoname[] = {
#define TYPETONAME(X) { X , #X }
	TYPETONAME(L),
	TYPETONAME(LRE),
	TYPETONAME(LRO),
	TYPETONAME(R),
	TYPETONAME(AL),
	TYPETONAME(RLE),
	TYPETONAME(RLO),
	TYPETONAME(PDF),
	TYPETONAME(EN),
	TYPETONAME(ES),
	TYPETONAME(ET),
	TYPETONAME(AN),
	TYPETONAME(CS),
	TYPETONAME(NSM),
	TYPETONAME(BN),
	TYPETONAME(B),
	TYPETONAME(S),
	TYPETONAME(WS),
	TYPETONAME(ON),
#undef TYPETONAME
    };
    int i;

    for (i = 1; i < argc; i++) {
	unsigned long chr = strtoul(argv[i], NULL, 0);
	int type = getType(chr);
	assert(typetoname[type].type == type);
	printf("U+%04x: %s\n", chr, typetoname[type].name);
    }

    return 0;
}

#endif