/* vim: set sw=8: -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ /* * pln.c: read sheets using a Plan Perfect encoding. * * Kevin Handy * Based on ff-csv code. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include GNM_PLUGIN_MODULE_HEADER; gboolean pln_file_probe (GOFileOpener const *fo, GsfInput *input, GOFileProbeLevel pl); void pln_file_open (GOFileOpener const *fo, GOIOContext *io_context, WorkbookView *wb_view, GsfInput *input); static char const *formula1[] = { NULL, /* 0 */ "-(", "ABS(", "INT(", "SIGN(", "NOT(", "TRUE(", "FALSE(", "AND(", "OR(", "AVERAGE(", /* 10 */ "COUNT(", "MIN(", "MAX(", "NA(", "ISNA(", "NOW(", "TODAY(", "FACT(", "ROW(", "COLUMN(" /* 20 */ }; static char const * formula2[] = { "?bad1?(", /* 0 */ "POWER(", "LN(", "LOG(", "SQRT(", "PI(", "EXP(", "SIN(", "COS(", "TAN(", "MOD(", /* 10 */ "ASIN(", "ACOS(", "ATAN(", "TERM(", "PV(", "PMT(", "FV(", "NPV(", "LOOKUP(", "INDEX(", /* 20 */ "ROUND(", "STDEV(", "CONCAT(", "MID(", "LENGTH(", "VALUE(", "TEXT(", "MDY(", "MONTH(", "DAY(", /* 30 */ "YEAR(", "DATETEXT(", "DATEVALUE(", "VAR(", "RANDOM(", "CURRENCY(", "ITERATION(", "ISVALUE(", "ISTEXT(", "REPLACE(", /* 40 */ "RADIANS(", "CELL(", "SUBTRACT(", "IRR(", "FIND(", "LEFT(", "RIGHT(", "UPPER(", "LOWER(", "PROPER(", "CHAR(", /* 50 */ "CODE(", "TRIM(", "REPEAT(", "BLOCK(", "CURSOR(", "DDB(", "SLN(", "SYD(", "RATE(", /* 60 */ "STATUS(", "FOREACH(", "DEGREES(", "HOUR(", "MINUTE(", "SECOND(", "HMS(", "TIMETEXT(", "TIMEVALUE(", "PRODUCT(", /* 70 */ "QUOTIENT(", "VARP(", "STDEVP(", "ATAN2(", "MATCH(", "MATCH2(", "LOOKUP2(", "LINK(", "ISERR(", "ISERR2(", /* 80 */ "CHOOSE(" }; typedef struct { Sheet *sheet; GHashTable *styles; } PlanPerfectImport; static guint8 const signature[] = { 0xff, 'W','P','C', 0x10, 0, 0, 0, 0x9, 0xa }; /* in charset.c. */ guint8 *pln_get_str (guint8 const *ch, unsigned len); static char const * pln_get_func_table1 (unsigned i) { g_return_val_if_fail (0 < i && i < G_N_ELEMENTS (formula1), "ERROR"); return formula1 [i]; } static char const * pln_get_func_table2 (unsigned i) { g_return_val_if_fail (0 < i && i < G_N_ELEMENTS (formula2), "ERROR"); return formula2 [i]; } gboolean pln_file_probe (GOFileOpener const *fo, GsfInput *input, GOFileProbeLevel pl) { /* * a plan-perfect header * 0 = -1 * 1-3 = "WPC" * 4-7 = 16 (double word) * 8 = 9 (plan perfect file) * 9 = 10 (worksheet file) * 10 = major version number * 11 = minor version number * 12-13 = encryption key * 14-15 = unused */ char const *header = NULL; if (!gsf_input_seek (input, 0, G_SEEK_SET)) header = gsf_input_read (input, sizeof (signature), NULL); return header != NULL && memcmp (header, signature, sizeof (signature)) == 0; } static GnmStyle * pln_get_style (PlanPerfectImport *state, guint8 const* data, gboolean is_cell) { guint16 attr, fmt, font; guint32 key; GnmStyle *res; attr = GSF_LE_GET_GUINT16 (data); fmt = GSF_LE_GET_GUINT16 (data+2); font = GSF_LE_GET_GUINT16 (data+4); /* Check for use of sheet defaults */ if (is_cell) { GnmStyle *def = sheet_style_default (state->sheet); if ((attr & 0x0700) == 0x0400) { attr &= 0xf8ff; switch (gnm_style_get_align_h (def)) { default : case GNM_HALIGN_GENERAL:break; case GNM_HALIGN_LEFT: attr |= 0x0100; break; case GNM_HALIGN_RIGHT: attr |= 0x0200; break; case GNM_HALIGN_DISTRIBUTED: case GNM_HALIGN_CENTER_ACROSS_SELECTION : case GNM_HALIGN_CENTER: attr |= 0x0300; break; } } if ((attr & 0x8000)) { gboolean is_locked = gnm_style_get_contents_locked (def); attr = (attr & 0x3fff) | (is_locked ? 0x4000 : 0); } gnm_style_unref (def); } /* bit bash a key containing all relevant info */ key = fmt << 16; key |= font & 0xf800; key |= (attr >> 4) & 0x07ff; /* drop type, hide 0, and top lock bit */ res = g_hash_table_lookup (state->styles, GINT_TO_POINTER (key)); if (res == NULL) { static GnmHAlign const haligns[] = { GNM_HALIGN_GENERAL, GNM_HALIGN_LEFT, GNM_HALIGN_RIGHT, GNM_HALIGN_CENTER }; res = gnm_style_new_default (); gnm_style_set_font_italic (res, (attr & 0x0010) ? TRUE : FALSE); gnm_style_set_contents_hidden (res, (attr & 0x0020) ? TRUE : FALSE); gnm_style_set_font_uline (res, (attr & 0x1000) ? UNDERLINE_DOUBLE : ((attr & 0x0040) ? UNDERLINE_SINGLE : UNDERLINE_NONE)); gnm_style_set_font_bold (res, (attr & 0x0080) ? TRUE : FALSE); gnm_style_set_align_h (res, haligns [(attr & 0x300) >> 8]); g_hash_table_insert (state->styles, GINT_TO_POINTER (key), res); #warning generate formats } gnm_style_ref (res); return res; } static gnm_float pln_get_number (guint8 const * ch) { int exp; gnm_float dvalue, scale = 256.0; int i; dvalue = 0.0; exp = *ch; for (i = 1; i <= 7; i++) { dvalue += ch[i] / scale; scale *= 256; } if (exp & 128) dvalue = -dvalue; dvalue = gnm_ldexp (dvalue, ((exp & 127) - 64) * 4); return dvalue; } static char * pln_get_addr (GnmParsePos const *pp, guint8 const *ch) { guint16 r = GSF_LE_GET_GUINT16 (ch); guint16 c = GSF_LE_GET_GUINT16 (ch+2); GnmCellRef ref; GnmConventionsOut out; ref.sheet = NULL; ref.col_relative = ref.row_relative = FALSE; ref.col = (c & 0x3fff); ref.row = (r & 0x3fff); switch (c & 0xc000) { case 0xc000: ref.col = *((gint16 *)&c); case 0x0000: ref.col_relative = TRUE; break; default : break; } switch (r & 0xc000) { case 0xc000: ref.row = *((gint16 *)&r); case 0x0000: ref.row_relative = TRUE; break; default : break; } out.accum = g_string_new (NULL); out.pp = pp; out.convs = gnm_conventions_default; cellref_as_string (&out, &ref, TRUE); return g_string_free (out.accum, FALSE); } static char * pln_convert_expr (GnmParsePos const *pp, guint8 const *ch, size_t datalen) { GString *expr = g_string_new (NULL); guint8 *str; guint8 const *end; int len, code; unsigned ui; g_return_val_if_fail (datalen >= 2, g_string_free (expr, FALSE)); /* Expressions are stored INFIX so it is easier to just generate text */ ui = GSF_LE_GET_GUINT16 (ch); g_return_val_if_fail (ui <= datalen - 2, g_string_free (expr, FALSE)); ch += 2; #if DEBUG_EXPR puts (cellpos_as_string (&pp->eval)); gsf_mem_dump (ch, ui); #endif for (end = ch + ui ; ch < end ; ) { code = *ch++; switch (code) { case 1: g_string_append_c (expr, '+'); break; case 5: /* Unary minus */ case 2: g_string_append_c (expr, '-'); break; case 3: g_string_append_c (expr, '*'); break; case 4: g_string_append_c (expr, '/'); break; case 6: g_string_append_c (expr, '%'); break; case 7: g_string_append (expr, "SUM("); break; case 11: g_string_append_c (expr, '^'); break; case 9: /* Text constant */ len = *ch; str = pln_get_str (ch + 1, len); g_string_append_c (expr, '\"'); go_strescape (expr, str); g_string_append_c (expr, '\"'); ch += len + 1; g_free (str); break; case 10: /* Named block */ len = *ch; g_string_append_len (expr, ch + 1, len); ch += len + 1; break; case 12: g_string_append (expr, pln_get_func_table1 (*ch++)); break; case 13: g_string_append (expr, pln_get_func_table2 (*ch++)); break; case 14: /* Special '+' which sums contiguous cells */ g_string_append (expr, "?+?"); break; case 15: g_string_append (expr, "_MOD_"); break; case 16: g_string_append (expr, "_NOT_"); break; case 17: g_string_append (expr, "_AND_"); break; case 18: g_string_append (expr, "_OR_"); break; case 19: g_string_append (expr, "_XOR_"); break; case 20: g_string_append (expr, "IF("); break; case 21: /* Compare function */ switch (*ch) { case 1: g_string_append (expr, "="); break; case 2: g_string_append (expr, "<>"); break; case 3: g_string_append (expr, ">"); break; case 4: g_string_append (expr, ">="); break; case 5: g_string_append (expr, "<"); break; case 6: g_string_append (expr, "<="); break; default: g_warning ("unknown comparative operator %u", *ch); } ch++; break; case 22: g_string_append_c (expr, ','); break; case 23: g_string_append_c (expr, '('); break; case 24: g_string_append_c (expr, ')'); break; case 25: { unsigned sp = *ch++; go_string_append_c_n (expr, ' ', sp); break; } case 26: /* Special formula error code */ g_string_append (expr, "??ERROR??"); break; case 27: /* Cell reference */ str = pln_get_addr (pp, ch); g_string_append (expr, str); g_free (str); ch += 4; break; case 28: /* Block reference */ str = pln_get_addr (pp, ch); g_string_append (expr, str); g_free (str); g_string_append_c (expr, ':'); str = pln_get_addr (pp, ch+4); g_string_append (expr, str); g_free (str); ch += 8; break; case 29: g_string_append (expr, "<>1"); /* ?? is this right ?? */ break; case 30: /* Floating point constant */ len = ch [8]; /* they store the ascii ?? will we be screwed by locale ? */ g_string_append_len (expr, ch+9, len); ch += 9 + len; break; case 31: /* Reference to passed argument in user defined function */ g_string_append (expr, "_unknown31_"); ch++; /* ignore arg number */ break; case 32: /* User function */ g_string_append (expr, "_unknown32_"); len = *ch; ch += len + 1; break; case 33: /* Temporary variable (#:=) */ len = ch [1]; g_string_append (expr, "_unknown33_"); g_string_append_len (expr, ch+2, len); ch += 2 + len; break; case 34: /* Temporary variable (#) */ len = ch [1]; g_string_append (expr, "_unknown34_"); g_string_append_len (expr, ch+2, len); ch += 2 + len; break; case 35: g_string_append (expr, "0."); break; case 36: g_string_append_c (expr, '{'); break; case 37: g_string_append_c (expr, ')'); break; case 38: g_string_append (expr, "FACTORIAL"); break; case 39: g_string_append (expr, "LOOKUP<"); break; case 40: g_string_append (expr, "LOOKUP>"); break; case 41: /* Attribute on */ case 42: /* Attribute off */ ch++; /* ignore */ break; case 43: /* Total attributes for formula */ ch += 2; break; case 44: /* Conditional attribute */ break; case 45: /* Assumed multiply - nop display */ break; case 46: /* Date format */ ch++; break; default: g_warning("PLN: Undefined formula code %d", code); } } return g_string_free (expr, FALSE); } /* Font width should really be calculated, but it's too hard right now */ #define FONT_WIDTH 8 static double pln_calc_font_width (guint16 cwidth, gboolean permit_default) { return (cwidth & 0xff) * FONT_WIDTH; } static GOErrorInfo * pln_parse_sheet (GsfInput *input, PlanPerfectImport *state) { int max_col = gnm_sheet_get_max_cols (state->sheet); int max_row = gnm_sheet_get_max_rows (state->sheet); int i, rcode, rlength; guint8 const *data; GnmValue *v; GnmStyle *style; GnmParsePos pp; GnmRange r; range_init (&r, 0,0,0, gnm_sheet_get_max_rows (state->sheet)); parse_pos_init_sheet (&pp, state->sheet); data = gsf_input_read (input, 16, NULL); if (data == NULL || GSF_LE_GET_GUINT16 (data + 12) != 0) return go_error_info_new_str (_("PLN : Spreadsheet is password encrypted")); /* Process the record based sections * Each record consists of a two-byte record type code, * followed by a two byte length */ do { data = gsf_input_read (input, 4, NULL); if (data == NULL) break; rcode = GSF_LE_GET_GUINT16 (data); rlength = GSF_LE_GET_GUINT16 (data + 2); data = gsf_input_read (input, rlength, NULL); if (data == NULL) break; switch (rcode) { case 0x01: /* guint16 last row with data; */ max_col = GSF_LE_GET_GUINT16 (data + 2); break; case 0x02: /* char ascii char of decimal point 0 * char ascii char of thousands separator 1 * WPCHAR 1-6 bytes for currency symbol 2 * guint16 default worksheet attributs 8 * guint16 default worksheet format 10 * guint32 default font 12 * guint16 default col width 16 */ break; case 0x03: /* Column format information */ for (i = 0; i < rlength / 6; i++, data += 6) if (i <= max_col) { double const width = pln_calc_font_width ( GSF_LE_GET_GUINT16 (data + 4), TRUE); sheet_col_set_size_pts (state->sheet, i, width, FALSE); r.start.col = r.end.col = i; sheet_style_apply_range (state->sheet, &r, pln_get_style (state, data, FALSE)); } break; default: ; /* g_warning("PLN : Record handling code for code %d not yet written", rcode); */ } } while (rcode != 25); /* process the CELL information */ while (NULL != (data = gsf_input_read (input, 20, NULL))) { GnmExprTop const *texpr = NULL; GnmCell *cell = NULL; unsigned type = GSF_LE_GET_GUINT16 (data + 12); unsigned length = GSF_LE_GET_GUINT16 (data + 18); pp.eval.row = GSF_LE_GET_GUINT16 (data + 0); pp.eval.col = GSF_LE_GET_GUINT16 (data + 2); /* Special value indicating end of sheet */ if (pp.eval.row == 0xFFFF) return NULL; if (pp.eval.row > max_row) return go_error_info_new_printf ( _("Ignoring data that claims to be in row %u which is > max row %u"), pp.eval.row, max_row); if (pp.eval.col > max_col) return go_error_info_new_printf ( _("Ignoring data that claims to be in column %u which is > max column %u"), pp.eval.col, max_col); v = NULL; if ((type & 0x7) != 0) { style = pln_get_style (state, data, TRUE); if (style != NULL) sheet_style_set_pos (state->sheet, pp.eval.col, pp.eval.row, style); if ((type & 0x7) != 6) cell = sheet_cell_fetch (state->sheet, pp.eval.col, pp.eval.row); } else { style = NULL; } switch (type & 0x7) { /* Empty Cell */ case 0: if (length != 0) { g_warning ("an empty unformated cell has an expression ?"); } else continue; /* Floating Point */ case 1: v = value_new_float (pln_get_number (data + 4)); break; /* Short Text */ case 2: v = value_new_string_nocopy ( pln_get_str (data + 5, data[4])); break; /* Long Text */ case 3: data = gsf_input_read (input, GSF_LE_GET_GUINT16 (data+4), NULL); if (data != NULL) v = value_new_string_nocopy ( pln_get_str (data + 2, GSF_LE_GET_GUINT16 (data))); break; /* Error Cell */ case 4: v = value_new_error_VALUE (NULL); break; /* na Cell */ case 5: v = value_new_error_NA (NULL); break; /* format only, no data in cell */ case 6: break; } if (length != 0) { data = gsf_input_read (input, length, NULL); if (cell != NULL && data != NULL) { char *expr_txt = pln_convert_expr (&pp, data, length); if (expr_txt != NULL) { texpr = gnm_expr_parse_str (expr_txt, &pp, GNM_EXPR_PARSE_DEFAULT, gnm_conventions_default, NULL); if (texpr == NULL) { value_release (v); v = value_new_string_nocopy (expr_txt); } else g_free (expr_txt); } } } if (texpr != NULL) { if (v != NULL) gnm_cell_set_expr_and_value (cell, texpr, v, TRUE); else gnm_cell_set_expr (cell, texpr); gnm_expr_top_unref (texpr); } else if (v != NULL) gnm_cell_set_value (cell, v); } return NULL; } void pln_file_open (GOFileOpener const *fo, GOIOContext *io_context, WorkbookView *wb_view, GsfInput *input) { Workbook *wb; char *name; Sheet *sheet; GOErrorInfo *error; PlanPerfectImport state; wb = wb_view_get_workbook (wb_view); name = workbook_sheet_get_free_name (wb, "PlanPerfect", FALSE, TRUE); sheet = sheet_new (wb, name, 256, 65536); g_free (name); workbook_sheet_attach (wb, sheet); sheet_flag_recompute_spans (sheet); state.sheet = sheet; state.styles = g_hash_table_new_full ( g_direct_hash, g_direct_equal, NULL, (GDestroyNotify) gnm_style_unref); error = pln_parse_sheet (input, &state); g_hash_table_destroy (state.styles); if (error != NULL) { workbook_sheet_delete (sheet); go_io_error_info_set (io_context, error); } }