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- /* Copyright (C) 1996, 2000 Aladdin Enterprises. All rights reserved.
-
- This software is provided AS-IS with no warranty, either express or
- implied.
-
- This software is distributed under license and may not be copied,
- modified or distributed except as expressly authorized under the terms
- of the license contained in the file LICENSE in this distribution.
-
- For more information about licensing, please refer to
- http://www.ghostscript.com/licensing/. For information on
- commercial licensing, go to http://www.artifex.com/licensing/ or
- contact Artifex Software, Inc., 101 Lucas Valley Road #110,
- San Rafael, CA 94903, U.S.A., +1(415)492-9861.
- */
- /* $Id: gstype2.c,v 1.36 2004/10/28 08:39:21 igor Exp $ */
- /* Adobe Type 2 charstring interpreter */
- #include "math_.h"
- #include "memory_.h"
- #include "gx.h"
- #include "gserrors.h"
- #include "gsstruct.h"
- #include "gxarith.h"
- #include "gxfixed.h"
- #include "gxmatrix.h"
- #include "gxcoord.h"
- #include "gxistate.h"
- #include "gxpath.h"
- #include "gxfont.h"
- #include "gxfont1.h"
- #include "gxtype1.h"
- #include "gxhintn.h"
- /* NOTE: The following are not yet implemented:
- * Registry items other than 0
- * Counter masks (but they are parsed correctly)
- * 'random' operator
- */
- /* ------ Internal routines ------ */
- /*
- * Set the character width. This is provided as an optional extra operand
- * on the stack for the first operator. After setting the width, we remove
- * the extra operand, and back up the interpreter pointer so we will
- * re-execute the operator when control re-enters the interpreter.
- */
- #define check_first_operator(explicit_width)\
- BEGIN\
- if ( pcis->init_done < 0 )\
- { ipsp->ip = cip, ipsp->dstate = state;\
- return type2_sbw(pcis, csp, cstack, ipsp, explicit_width);\
- }\
- END
- private int
- type2_sbw(gs_type1_state * pcis, cs_ptr csp, cs_ptr cstack, ip_state_t * ipsp,
- bool explicit_width)
- {
- t1_hinter *h = &pcis->h;
- fixed sbx = fixed_0, sby = fixed_0, wx, wy = fixed_0;
- int code;
- if (explicit_width) {
- wx = cstack[0] + pcis->pfont->data.nominalWidthX;
- memmove(cstack, cstack + 1, (csp - cstack) * sizeof(*cstack));
- --csp;
- } else
- wx = pcis->pfont->data.defaultWidthX;
- if (pcis->seac_accent < 0) {
- if (pcis->sb_set) {
- sbx = pcis->lsb.x;
- sby = pcis->lsb.y;
- }
- if (pcis->width_set) {
- wx = pcis->width.x;
- wy = pcis->width.y;
- }
- }
- code = t1_hinter__sbw(h, sbx, sby, wx, wy);
- if (code < 0)
- return code;
- gs_type1_sbw(pcis, fixed_0, fixed_0, wx, fixed_0);
- /* Back up the interpretation pointer. */
- ipsp->ip--;
- decrypt_skip_previous(*ipsp->ip, ipsp->dstate);
- /* Save the interpreter state. */
- pcis->os_count = csp + 1 - cstack;
- pcis->ips_count = ipsp - &pcis->ipstack[0] + 1;
- memcpy(pcis->ostack, cstack, pcis->os_count * sizeof(cstack[0]));
- if (pcis->init_done < 0) { /* Finish init when we return. */
- pcis->init_done = 0;
- }
- return type1_result_sbw;
- }
- private int
- type2_vstem(gs_type1_state * pcis, cs_ptr csp, cs_ptr cstack)
- {
- fixed x = 0;
- cs_ptr ap;
- t1_hinter *h = &pcis->h;
- int code;
- for (ap = cstack; ap + 1 <= csp; x += ap[1], ap += 2) {
- code = t1_hinter__vstem(h, x += ap[0], ap[1]);
- if (code < 0)
- return code;
- }
- pcis->num_hints += (csp + 1 - cstack) >> 1;
- return 0;
- }
- /* ------ Main interpreter ------ */
- /*
- * Continue interpreting a Type 2 charstring. If str != 0, it is taken as
- * the byte string to interpret. Return 0 on successful completion, <0 on
- * error, or >0 when client intervention is required (or allowed). The int*
- * argument is only for compatibility with the Type 1 charstring interpreter.
- */
- int
- gs_type2_interpret(gs_type1_state * pcis, const gs_glyph_data_t *pgd,
- int *ignore_pindex)
- {
- gs_font_type1 *pfont = pcis->pfont;
- gs_type1_data *pdata = &pfont->data;
- t1_hinter *h = &pcis->h;
- bool encrypted = pdata->lenIV >= 0;
- fixed cstack[ostack_size];
- cs_ptr csp;
- #define clear CLEAR_CSTACK(cstack, csp)
- ip_state_t *ipsp = &pcis->ipstack[pcis->ips_count - 1];
- register const byte *cip;
- register crypt_state state;
- register int c;
- cs_ptr ap;
- bool vertical;
- int code = 0;
- /****** FAKE THE REGISTRY ******/
- struct {
- float *values;
- uint size;
- } Registry[1];
- Registry[0].values = pcis->pfont->data.WeightVector.values;
- switch (pcis->init_done) {
- case -1:
- t1_hinter__init(h, pcis->path);
- break;
- case 0:
- gs_type1_finish_init(pcis); /* sets origin */
- code = t1_hinter__set_mapping(h, &pcis->pis->ctm,
- &pfont->FontMatrix, &pfont->base->FontMatrix,
- pcis->scale.x.log2_unit, pcis->scale.x.log2_unit,
- pcis->scale.x.log2_unit - pcis->log2_subpixels.x,
- pcis->scale.y.log2_unit - pcis->log2_subpixels.y,
- pcis->origin.x, pcis->origin.y,
- gs_currentaligntopixels(pfont->dir));
- if (code < 0)
- return code;
- code = t1_hinter__set_font_data(h, 2, pdata, pcis->no_grid_fitting);
- if (code < 0)
- return code;
- break;
- default /*case 1 */ :
- break;
- }
- INIT_CSTACK(cstack, csp, pcis);
- if (pgd == 0)
- goto cont;
- ipsp->cs_data = *pgd;
- cip = pgd->bits.data;
- call:state = crypt_charstring_seed;
- if (encrypted) {
- int skip = pdata->lenIV;
- /* Skip initial random bytes */
- for (; skip > 0; ++cip, --skip)
- decrypt_skip_next(*cip, state);
- }
- goto top;
- cont:cip = ipsp->ip;
- state = ipsp->dstate;
- top:for (;;) {
- uint c0 = *cip++;
- charstring_next(c0, state, c, encrypted);
- if (c >= c_num1) {
- /* This is a number, decode it and push it on the stack. */
- if (c < c_pos2_0) { /* 1-byte number */
- decode_push_num1(csp, cstack, c);
- } else if (c < cx_num4) { /* 2-byte number */
- decode_push_num2(csp, cstack, c, cip, state, encrypted);
- } else if (c == cx_num4) { /* 4-byte number */
- long lw;
- decode_num4(lw, cip, state, encrypted);
- /* 32-bit numbers are 16:16. */
- CS_CHECK_PUSH(csp, cstack);
- *++csp = arith_rshift(lw, 16 - _fixed_shift);
- } else /* not possible */
- return_error(gs_error_invalidfont);
- pushed:if_debug3('1', "[1]%d: (%d) %f\n",
- (int)(csp - cstack), c, fixed2float(*csp));
- continue;
- }
- #ifdef DEBUG
- if (gs_debug['1']) {
- static const char *const c2names[] =
- {char2_command_names};
- if (c2names[c] == 0)
- dlprintf2("[1]0x%lx: %02x??\n", (ulong) (cip - 1), c);
- else
- dlprintf3("[1]0x%lx: %02x %s\n", (ulong) (cip - 1), c,
- c2names[c]);
- }
- #endif
- switch ((char_command) c) {
- #define cnext clear; goto top
- /* Commands with identical functions in Type 1 and Type 2, */
- /* except for 'escape'. */
- case c_undef0:
- case c_undef2:
- case c_undef17:
- return_error(gs_error_invalidfont);
- case c_callsubr:
- c = fixed2int_var(*csp) + pdata->subroutineNumberBias;
- code = pdata->procs.subr_data
- (pfont, c, false, &ipsp[1].cs_data);
- subr:if (code < 0) {
- /* Calling a Subr with an out-of-range index is clearly a error:
- * the Adobe documentation says the results of doing this are
- * undefined. However, we have seen a PDF file produced by Adobe
- * PDF Library 4.16 that included a Type 2 font that called an
- * out-of-range Subr, and Acrobat Reader did not signal an error.
- * Therefore, we ignore such calls.
- */
- cip++;
- goto top;
- }
- --csp;
- ipsp->ip = cip, ipsp->dstate = state;
- ++ipsp;
- cip = ipsp->cs_data.bits.data;
- goto call;
- case c_return:
- gs_glyph_data_free(&ipsp->cs_data, "gs_type2_interpret");
- --ipsp;
- goto cont;
- case c_undoc15:
- /* See gstype1.h for information on this opcode. */
- cnext;
- /* Commands with similar but not identical functions */
- /* in Type 1 and Type 2 charstrings. */
- case cx_hstem:
- goto hstem;
- case cx_vstem:
- goto vstem;
- case cx_vmoveto:
- check_first_operator(csp > cstack);
- code = t1_hinter__rmoveto(h, 0, *csp);
- move:
- cc:
- if (code < 0)
- return code;
- goto pp;
- case cx_rlineto:
- for (ap = cstack; ap + 1 <= csp; ap += 2) {
- code = t1_hinter__rlineto(h, ap[0], ap[1]);
- if (code < 0)
- return code;
- }
- pp:
- cnext;
- case cx_hlineto:
- vertical = false;
- goto hvl;
- case cx_vlineto:
- vertical = true;
- hvl:for (ap = cstack; ap <= csp; vertical = !vertical, ++ap) {
- if (vertical) {
- code = t1_hinter__rlineto(h, 0, ap[0]);
- } else {
- code = t1_hinter__rlineto(h, ap[0], 0);
- }
- if (code < 0)
- return code;
- }
- goto pp;
- case cx_rrcurveto:
- for (ap = cstack; ap + 5 <= csp; ap += 6) {
- code = t1_hinter__rcurveto(h, ap[0], ap[1], ap[2],
- ap[3], ap[4], ap[5]);
- if (code < 0)
- return code;
- }
- goto pp;
- case cx_endchar:
- /*
- * It is a feature of Type 2 CharStrings that if endchar is
- * invoked with 4 or 5 operands, it is equivalent to the
- * Type 1 seac operator. In this case, the asb operand of
- * seac is missing: we assume it is the same as the
- * l.s.b. of the accented character. This feature was
- * undocumented until the 16 March 2000 version of the Type
- * 2 Charstring Format specification, but, thankfully, is
- * described in that revision.
- */
- if (csp >= cstack + 3) {
- check_first_operator(csp > cstack + 3);
- code = gs_type1_seac(pcis, cstack, 0, ipsp);
- if (code < 0)
- return code;
- clear;
- cip = ipsp->cs_data.bits.data;
- goto call;
- }
- /*
- * This might be the only operator in the charstring.
- * In this case, there might be a width on the stack.
- */
- check_first_operator(csp >= cstack);
- code = t1_hinter__endchar(h, (pcis->seac_accent >= 0));
- if (code < 0)
- return code;
- if (pcis->seac_accent < 0) {
- code = t1_hinter__endglyph(h);
- if (code < 0)
- return code;
- code = gx_setcurrentpoint_from_path(pcis->pis, pcis->path);
- if (code < 0)
- return code;
- } else
- t1_hinter__setcurrentpoint(h, pcis->save_adxy.x, pcis->save_adxy.y);
- code = gs_type1_endchar(pcis);
- if (code == 1) {
- /*
- * Reset the total hint count so that hintmask will
- * parse its following data correctly.
- * (gs_type1_endchar already reset the actual hint
- * tables.)
- */
- pcis->num_hints = 0;
- /* do accent of seac */
- ipsp = &pcis->ipstack[pcis->ips_count - 1];
- cip = ipsp->cs_data.bits.data;
- goto call;
- }
- return code;
- case cx_rmoveto:
- /* See vmoveto above re closing the subpath. */
- check_first_operator(!((csp - cstack) & 1));
- if (csp > cstack + 1) {
- /* Some Type 2 charstrings omit the vstemhm operator before rmoveto,
- even though this is only allowed before hintmask and cntrmask.
- Thanks to Felix Pahl.
- */
- type2_vstem(pcis, csp - 2, cstack);
- cstack [0] = csp [-1];
- cstack [1] = csp [ 0];
- csp = cstack + 1;
- }
- code = t1_hinter__rmoveto(h, csp[-1], *csp);
- goto move;
- case cx_hmoveto:
- /* See vmoveto above re closing the subpath. */
- check_first_operator(csp > cstack);
- code = t1_hinter__rmoveto(h, *csp, 0);
- goto move;
- case cx_vhcurveto:
- vertical = true;
- goto hvc;
- case cx_hvcurveto:
- vertical = false;
- hvc:for (ap = cstack; ap + 3 <= csp; vertical = !vertical, ap += 4) {
- gs_fixed_point pt[2] = {{0, 0}, {0, 0}};
- if (vertical) {
- pt[0].y = ap[0];
- pt[1].x = ap[3];
- if (ap + 4 == csp)
- pt[1].y = ap[4];
- } else {
- pt[0].x = ap[0];
- if (ap + 4 == csp)
- pt[1].x = ap[4];
- pt[1].y = ap[3];
- }
- code = t1_hinter__rcurveto(h, pt[0].x, pt[0].y, ap[1], ap[2], pt[1].x, pt[1].y);
- if (code < 0)
- return code;
- }
- goto pp;
- /***********************
- * New Type 2 commands *
- ***********************/
- case c2_blend:
- {
- int n = fixed2int_var(*csp);
- int num_values = csp - cstack;
- gs_font_type1 *pfont = pcis->pfont;
- int k = pfont->data.WeightVector.count;
- int i, j;
- cs_ptr base, deltas;
- base = csp - 1 - num_values;
- deltas = base + n - 1;
- for (j = 0; j < n; j++, base++, deltas += k - 1)
- for (i = 1; i < k; i++)
- *base += (fixed)(deltas[i] *
- pfont->data.WeightVector.values[i]);
- }
- cnext;
- case c2_hstemhm:
- hstem:check_first_operator(!((csp - cstack) & 1));
- {
- fixed x = 0;
- for (ap = cstack; ap + 1 <= csp; x += ap[1], ap += 2) {
- code = t1_hinter__hstem(h, x += ap[0], ap[1]);
- if (code < 0)
- return code;
- }
- }
- pcis->num_hints += (csp + 1 - cstack) >> 1;
- cnext;
- case c2_hintmask:
- /*
- * A hintmask at the beginning of the CharString is
- * equivalent to vstemhm + hintmask. For simplicity, we use
- * this interpretation everywhere.
- */
- case c2_cntrmask:
- check_first_operator(!((csp - cstack) & 1));
- type2_vstem(pcis, csp, cstack);
- /*
- * We should clear the stack here only if this is the
- * initial mask operator that includes the implicit
- * vstemhm, but currently this is too much trouble to
- * detect.
- */
- clear;
- {
- byte mask[max_total_stem_hints / 8];
- int i;
- for (i = 0; i < pcis->num_hints; ++cip, i += 8) {
- charstring_next(*cip, state, mask[i >> 3], encrypted);
- if_debug1('1', " 0x%02x", mask[i >> 3]);
- }
- if_debug0('1', "\n");
- ipsp->ip = cip;
- ipsp->dstate = state;
- if (c == c2_cntrmask) {
- /****** NYI ******/
- } else { /* hintmask or equivalent */
- if_debug0('1', "[1]hstem hints:\n");
- if_debug0('1', "[1]vstem hints:\n");
- code = t1_hinter__hint_mask(h, mask);
- if (code < 0)
- return code;
- }
- }
- break;
- case c2_vstemhm:
- vstem:check_first_operator(!((csp - cstack) & 1));
- type2_vstem(pcis, csp, cstack);
- cnext;
- case c2_rcurveline:
- for (ap = cstack; ap + 5 <= csp; ap += 6) {
- code = t1_hinter__rcurveto(h, ap[0], ap[1], ap[2], ap[3],
- ap[4], ap[5]);
- if (code < 0)
- return code;
- }
- code = t1_hinter__rlineto(h, ap[0], ap[1]);
- goto cc;
- case c2_rlinecurve:
- for (ap = cstack; ap + 7 <= csp; ap += 2) {
- code = t1_hinter__rlineto(h, ap[0], ap[1]);
- if (code < 0)
- return code;
- }
- code = t1_hinter__rcurveto(h, ap[0], ap[1], ap[2], ap[3],
- ap[4], ap[5]);
- goto cc;
- case c2_vvcurveto:
- ap = cstack;
- {
- int n = csp + 1 - cstack;
- fixed dxa = (n & 1 ? *ap++ : 0);
- for (; ap + 3 <= csp; ap += 4) {
- code = t1_hinter__rcurveto(h, dxa, ap[0], ap[1], ap[2],
- fixed_0, ap[3]);
- if (code < 0)
- return code;
- dxa = 0;
- }
- }
- goto pp;
- case c2_hhcurveto:
- ap = cstack;
- {
- int n = csp + 1 - cstack;
- fixed dya = (n & 1 ? *ap++ : 0);
- for (; ap + 3 <= csp; ap += 4) {
- code = t1_hinter__rcurveto(h, ap[0], dya, ap[1], ap[2],
- ap[3], fixed_0);
- if (code < 0)
- return code;
- dya = 0;
- }
- }
- goto pp;
- case c2_shortint:
- {
- int c1, c2;
- charstring_next(*cip, state, c1, encrypted);
- ++cip;
- charstring_next(*cip, state, c2, encrypted);
- ++cip;
- CS_CHECK_PUSH(csp, cstack);
- *++csp = int2fixed((((c1 ^ 0x80) - 0x80) << 8) + c2);
- }
- goto pushed;
- case c2_callgsubr:
- c = fixed2int_var(*csp) + pdata->gsubrNumberBias;
- code = pdata->procs.subr_data
- (pfont, c, true, &ipsp[1].cs_data);
- goto subr;
- case cx_escape:
- charstring_next(*cip, state, c, encrypted);
- ++cip;
- #ifdef DEBUG
- if (gs_debug['1'] && c < char2_extended_command_count) {
- static const char *const ce2names[] =
- {char2_extended_command_names};
- if (ce2names[c] == 0)
- dlprintf2("[1]0x%lx: %02x??\n", (ulong) (cip - 1), c);
- else
- dlprintf3("[1]0x%lx: %02x %s\n", (ulong) (cip - 1), c,
- ce2names[c]);
- }
- #endif
- switch ((char2_extended_command) c) {
- case ce2_and:
- csp[-1] = ((csp[-1] != 0) & (*csp != 0) ? fixed_1 : 0);
- --csp;
- break;
- case ce2_or:
- csp[-1] = (csp[-1] | *csp ? fixed_1 : 0);
- --csp;
- break;
- case ce2_not:
- *csp = (*csp ? 0 : fixed_1);
- break;
- case ce2_store:
- {
- int i, n = fixed2int_var(*csp);
- float *to = Registry[fixed2int_var(csp[-3])].values +
- fixed2int_var(csp[-2]);
- const fixed *from =
- pcis->transient_array + fixed2int_var(csp[-1]);
- for (i = 0; i < n; ++i)
- to[i] = fixed2float(from[i]);
- }
- csp -= 4;
- break;
- case ce2_abs:
- if (*csp < 0)
- *csp = -*csp;
- break;
- case ce2_add:
- csp[-1] += *csp;
- --csp;
- break;
- case ce2_sub:
- csp[-1] -= *csp;
- --csp;
- break;
- case ce2_div:
- csp[-1] = float2fixed((double)csp[-1] / *csp);
- --csp;
- break;
- case ce2_load:
- /* The specification says there is no j (starting index */
- /* in registry array) argument.... */
- {
- int i, n = fixed2int_var(*csp);
- const float *from = Registry[fixed2int_var(csp[-2])].values;
- fixed *to =
- pcis->transient_array + fixed2int_var(csp[-1]);
- for (i = 0; i < n; ++i)
- to[i] = float2fixed(from[i]);
- }
- csp -= 3;
- break;
- case ce2_neg:
- *csp = -*csp;
- break;
- case ce2_eq:
- csp[-1] = (csp[-1] == *csp ? fixed_1 : 0);
- --csp;
- break;
- case ce2_drop:
- --csp;
- break;
- case ce2_put:
- pcis->transient_array[fixed2int_var(*csp)] = csp[-1];
- csp -= 2;
- break;
- case ce2_get:
- *csp = pcis->transient_array[fixed2int_var(*csp)];
- break;
- case ce2_ifelse:
- if (csp[-1] > *csp)
- csp[-3] = csp[-2];
- csp -= 3;
- break;
- case ce2_random:
- CS_CHECK_PUSH(csp, cstack);
- ++csp;
- /****** NYI ******/
- break;
- case ce2_mul:
- {
- double prod = fixed2float(csp[-1]) * *csp;
- csp[-1] =
- (prod > max_fixed ? max_fixed :
- prod < min_fixed ? min_fixed : (fixed)prod);
- }
- --csp;
- break;
- case ce2_sqrt:
- if (*csp >= 0)
- *csp = float2fixed(sqrt(fixed2float(*csp)));
- break;
- case ce2_dup:
- CS_CHECK_PUSH(csp, cstack);
- csp[1] = *csp;
- ++csp;
- break;
- case ce2_exch:
- {
- fixed top = *csp;
- *csp = csp[-1], csp[-1] = top;
- }
- break;
- case ce2_index:
- *csp =
- (*csp < 0 ? csp[-1] : csp[-1 - fixed2int_var(csp[-1])]);
- break;
- case ce2_roll:
- {
- int distance = fixed2int_var(*csp);
- int count = fixed2int_var(csp[-1]);
- cs_ptr bot;
- csp -= 2;
- if (count < 0 || count > csp + 1 - cstack)
- return_error(gs_error_invalidfont);
- if (count == 0)
- break;
- if (distance < 0)
- distance = count - (-distance % count);
- bot = csp + 1 - count;
- while (--distance >= 0) {
- fixed top = *csp;
- memmove(bot + 1, bot,
- (count - 1) * sizeof(fixed));
- *bot = top;
- }
- }
- break;
- case ce2_hflex:
- csp[6] = fixed_half; /* fd/100 */
- csp[4] = *csp, csp[5] = 0; /* dx6, dy6 */
- csp[2] = csp[-1], csp[3] = -csp[-4]; /* dx5, dy5 */
- *csp = csp[-2], csp[1] = 0; /* dx4, dy4 */
- csp[-2] = csp[-3], csp[-1] = 0; /* dx3, dy3 */
- csp[-3] = csp[-4], csp[-4] = csp[-5]; /* dx2, dy2 */
- csp[-5] = 0; /* dy1 */
- csp += 6;
- goto flex;
- case ce2_flex:
- *csp /= 100; /* fd/100 */
- flex: {
- fixed x_join = csp[-12] + csp[-10] + csp[-8];
- fixed y_join = csp[-11] + csp[-9] + csp[-7];
- fixed x_end = x_join + csp[-6] + csp[-4] + csp[-2];
- fixed y_end = y_join + csp[-5] + csp[-3] + csp[-1];
- gs_point join, end;
- double flex_depth;
- if ((code =
- gs_distance_transform(fixed2float(x_join),
- fixed2float(y_join),
- &ctm_only(pcis->pis),
- &join)) < 0 ||
- (code =
- gs_distance_transform(fixed2float(x_end),
- fixed2float(y_end),
- &ctm_only(pcis->pis),
- &end)) < 0
- )
- return code;
- /*
- * Use the X or Y distance depending on whether
- * the curve is more horizontal or more
- * vertical.
- */
- if (any_abs(end.y) > any_abs(end.x))
- flex_depth = join.x;
- else
- flex_depth = join.y;
- if (fabs(flex_depth) < fixed2float(*csp)) {
- /* Do flex as line. */
- code = t1_hinter__rlineto(h, x_end, y_end);
- } else {
- /*
- * Do flex as curve. We can't jump to rrc,
- * because the flex operators don't clear
- * the stack (!).
- */
- code = t1_hinter__rcurveto(h,
- csp[-12], csp[-11], csp[-10],
- csp[-9], csp[-8], csp[-7]);
- if (code < 0)
- return code;
- code = t1_hinter__rcurveto(h,
- csp[-6], csp[-5], csp[-4],
- csp[-3], csp[-2], csp[-1]);
- }
- if (code < 0)
- return code;
- csp -= 13;
- }
- cnext;
- case ce2_hflex1:
- csp[4] = fixed_half; /* fd/100 */
- csp[2] = *csp; /* dx6 */
- csp[3] = -(csp[-7] + csp[-5] + csp[-1]); /* dy6 */
- *csp = csp[-2], csp[1] = csp[-1]; /* dx5, dy5 */
- csp[-2] = csp[-3], csp[-1] = 0; /* dx4, dy4 */
- csp[-3] = 0; /* dy3 */
- csp += 4;
- goto flex;
- case ce2_flex1:
- {
- fixed dx = csp[-10] + csp[-8] + csp[-6] + csp[-4] + csp[-2];
- fixed dy = csp[-9] + csp[-7] + csp[-5] + csp[-3] + csp[-1];
- if (any_abs(dx) > any_abs(dy))
- csp[1] = -dy; /* d6 is dx6 */
- else
- csp[1] = *csp, *csp = -dx; /* d6 is dy6 */
- }
- csp[2] = fixed_half; /* fd/100 */
- csp += 2;
- goto flex;
- }
- break;
- /* Fill up the dispatch up to 32. */
- case_c2_undefs:
- default: /* pacify compiler */
- return_error(gs_error_invalidfont);
- }
- }
- }
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