X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fdata%2Fsys-file-reader.c;h=072fca3b0964be65209abcd44cf6acc89cc8d809;hb=97d4f38945476834fd7fce612b663f19f2b291f8;hp=98e1a0621d9b5d9be3b6166ab4eb7702d1eb03a3;hpb=b74d09af5e07f954c18e7cdb8aca3af47fa10208;p=pspp-builds.git diff --git a/src/data/sys-file-reader.c b/src/data/sys-file-reader.c index 98e1a062..072fca3b 100644 --- a/src/data/sys-file-reader.c +++ b/src/data/sys-file-reader.c @@ -26,6 +26,7 @@ #include #include +#include #include #include #include @@ -55,7 +56,6 @@ struct sfm_reader FILE *file; /* File stream. */ int reverse_endian; /* 1=file has endianness opposite us. */ - int fix_specials; /* 1=SYSMIS/HIGHEST/LOWEST differs from us. */ int value_cnt; /* Number of `union values's per case. */ long case_cnt; /* Number of cases, -1 if unknown. */ int compressed; /* 1=compressed, 0=not compressed. */ @@ -65,8 +65,8 @@ struct sfm_reader bool has_vls; /* True if the file has one or more Very Long Strings*/ /* Variables. */ - struct hsh_table *var_hash; - struct variable **svars; + struct sfm_var *vars; + size_t var_cnt; /* File's special constants. */ flt64 sysmis; @@ -86,7 +86,6 @@ struct sfm_reader /* A variable in a system file. */ struct sfm_var { - char name[SHORT_NAME_LEN + 1]; /* name */ int width; /* 0=numeric, otherwise string width. */ int fv; /* Index into case. */ }; @@ -166,7 +165,7 @@ sfm_close_reader (struct sfm_reader *r) if (r->fh != NULL) fh_close (r->fh, "system file", "rs"); - hsh_destroy(r->var_hash); + free (r->vars); free (r->buf); free (r); } @@ -272,59 +271,6 @@ pair_sn_free(void *p, void *aux UNUSED) -/* A hsh_compare_func that orders variables A and B by their - names. */ -static int -compare_var_shortnames (const void *a_, const void *b_, void *foo UNUSED) -{ - int i; - const struct variable *a = a_; - const struct variable *b = b_; - - char buf1[SHORT_NAME_LEN + 1]; - char buf2[SHORT_NAME_LEN + 1]; - - memset(buf1, 0, SHORT_NAME_LEN + 1); - memset(buf2, 0, SHORT_NAME_LEN + 1); - - for (i = 0 ; i <= SHORT_NAME_LEN ; ++i ) - { - buf1[i] = a->short_name[i]; - if ( '\0' == buf1[i]) - break; - } - - for (i = 0 ; i <= SHORT_NAME_LEN ; ++i ) - { - buf2[i] = b->short_name[i]; - if ( '\0' == buf2[i]) - break; - } - - return strncmp(buf1, buf2, SHORT_NAME_LEN); -} - -/* A hsh_hash_func that hashes variable V based on its name. */ -static unsigned -hash_var_shortname (const void *v_, void *foo UNUSED) -{ - int i; - const struct variable *v = v_; - char buf[SHORT_NAME_LEN + 1]; - - memset(buf, 0, SHORT_NAME_LEN + 1); - for (i = 0 ; i <= SHORT_NAME_LEN ; ++i ) - { - buf[i] = v->short_name[i]; - if ( '\0' == buf[i]) - break; - } - - return hsh_hash_bytes(buf, strlen(buf)); -} - - - /* Opens the system file designated by file handle FH for reading. Reads the system file's dictionary into *DICT. If INFO is non-null, then it receives additional info about the @@ -342,7 +288,6 @@ sfm_open_reader (struct file_handle *fh, struct dictionary **dict, /* A hash table of long variable names indexed by short name */ struct hsh_table *short_to_long = NULL; - *dict = dict_create (); if (!fh_open (fh, FH_REF_FILE, "system file", "rs")) goto error; @@ -353,7 +298,6 @@ sfm_open_reader (struct file_handle *fh, struct dictionary **dict, r->file = fn_open (fh_get_file_name (fh), "rb"); r->reverse_endian = 0; - r->fix_specials = 0; r->value_cnt = 0; r->case_cnt = 0; r->compressed = 0; @@ -361,9 +305,8 @@ sfm_open_reader (struct file_handle *fh, struct dictionary **dict, r->weight_idx = -1; r->ok = true; r->has_vls = false; - r->svars = 0; - r->var_hash = hsh_create(4, compare_var_shortnames, hash_var_shortname, 0, 0); + r->vars = NULL; r->sysmis = -FLT64_MAX; r->highest = FLT64_MAX; @@ -534,8 +477,6 @@ sfm_open_reader (struct file_handle *fh, struct dictionary **dict, char *short_name, *save_ptr; int idx; - r->has_vls = true; - /* Read data. */ subrec14data = xmalloc (bytes + 1); if (!buf_read (r, subrec14data, bytes, 0)) @@ -611,7 +552,7 @@ sfm_open_reader (struct file_handle *fh, struct dictionary **dict, records have been processed. --- JMD 27 April 2006 */ - /* For compatability, make sure dictionary + /* For compatibility, make sure dictionary is in long variable name map order. In the common case, this has no effect, because the dictionary and the long @@ -639,6 +580,7 @@ sfm_open_reader (struct file_handle *fh, struct dictionary **dict, } buffer[bytes] = '\0'; + r->has_vls = true; /* Note: SPSS v13 terminates this record with 00, whereas SPSS v14 terminates it with 00 09. We must @@ -703,8 +645,6 @@ sfm_open_reader (struct file_handle *fh, struct dictionary **dict, else l -= v_next->width; - hsh_delete(r->var_hash, v_next); - dict_delete_var(*dict, v_next); } @@ -771,6 +711,24 @@ sfm_open_reader (struct file_handle *fh, struct dictionary **dict, success: /* Come here on successful completion. */ + /* Create an index of dictionary variable widths for + sfm_read_case to use. We cannot use the `struct variables' + from the dictionary we created, because the caller owns the + dictionary and may destroy or modify its variables. */ + { + size_t i; + + r->var_cnt = dict_get_var_cnt (*dict); + r->vars = xnmalloc (r->var_cnt, sizeof *r->vars); + for (i = 0; i < r->var_cnt; i++) + { + struct variable *v = dict_get_var (*dict, i); + struct sfm_var *sv = &r->vars[i]; + sv->width = v->width; + sv->fv = v->fv; + } + } + free (var_by_idx); hsh_destroy(short_to_long); free (subrec14data); @@ -1223,9 +1181,6 @@ read_variables (struct sfm_reader *r, if (!parse_format_spec (r, sv.print, &vv->print, vv) || !parse_format_spec (r, sv.write, &vv->write, vv)) goto error; - - if ( vv->width != -1) - hsh_insert(r->var_hash, vv); } /* Some consistency checks. */ @@ -1665,7 +1620,7 @@ read_compressed_data (struct sfm_reader *r, flt64 *buf) p = r->x; } - abort (); + NOT_REACHED (); success: /* We have filled up an entire record. Update state and return @@ -1679,20 +1634,6 @@ read_compressed_data (struct sfm_reader *r, flt64 *buf) return 0; } - -static int -compare_var_index(const void *_v1, const void *_v2, void *aux UNUSED) -{ - const struct variable *const *v1 = _v1; - const struct variable *const *v2 = _v2; - - if ( (*v1)->index < (*v2)->index) - return -1; - - return ( (*v1)->index > (*v2)->index) ; -} - - /* Reads one case from READER's file into C. Returns nonzero only if successful. */ int @@ -1701,13 +1642,6 @@ sfm_read_case (struct sfm_reader *r, struct ccase *c) if (!r->ok) return 0; - if ( ! r->svars ) - { - r->svars = (struct variable **) hsh_data(r->var_hash); - sort(r->svars, hsh_count(r->var_hash), - sizeof(*r->svars), compare_var_index, 0); - } - if (!r->compressed && sizeof (flt64) == sizeof (double) && ! r->has_vls) { /* Fast path: external and internal representations are the @@ -1723,12 +1657,9 @@ sfm_read_case (struct sfm_reader *r, struct ccase *c) { int i; - for (i = 0; i < hsh_count(r->var_hash); i++) - { - struct variable *v = r->svars[i]; - if (v->width == 0) - bswap_flt64 (&case_data_rw (c, v->fv)->f); - } + for (i = 0; i < r->var_cnt; i++) + if (r->vars[i].width == 0) + bswap_flt64 (&case_data_rw (c, r->vars[i].fv)->f); } /* Fix up SYSMIS values if needed. @@ -1737,12 +1668,10 @@ sfm_read_case (struct sfm_reader *r, struct ccase *c) if (r->sysmis != SYSMIS) { int i; - for (i = 0; i < hsh_count(r->var_hash); i++) - { - struct variable *v = r->svars[i]; - if (v->width == 0 && case_num (c, i) == r->sysmis) - case_data_rw (c, v->fv)->f = SYSMIS; - } + + for (i = 0; i < r->var_cnt; i++) + if (r->vars[i].width == 0 && case_num (c, i) == r->sysmis) + case_data_rw (c, r->vars[i].fv)->f = SYSMIS; } } else @@ -1770,31 +1699,31 @@ sfm_read_case (struct sfm_reader *r, struct ccase *c) return 0; } - for (i = 0; i < hsh_count(r->var_hash); i++) + for (i = 0; i < r->var_cnt; i++) { - struct variable *tv = r->svars[i]; + struct sfm_var *sv = &r->vars[i]; - if (tv->width == 0) + if (sv->width == 0) { flt64 f = *bounce_cur++; if (r->reverse_endian) bswap_flt64 (&f); - case_data_rw (c, tv->fv)->f = f == r->sysmis ? SYSMIS : f; + case_data_rw (c, sv->fv)->f = f == r->sysmis ? SYSMIS : f; } - else if (tv->width != -1) + else { flt64 *bc_start = bounce_cur; int ofs = 0; - while (ofs < tv->width ) + while (ofs < sv->width ) { - const int chunk = MIN (MAX_LONG_STRING, tv->width - ofs); - memcpy (case_data_rw (c, tv->fv)->s + ofs, bounce_cur, chunk); + const int chunk = MIN (MAX_LONG_STRING, sv->width - ofs); + memcpy (case_data_rw (c, sv->fv)->s + ofs, bounce_cur, chunk); bounce_cur += DIV_RND_UP (chunk, sizeof (flt64)); ofs += chunk; } - bounce_cur = bc_start + width_to_bytes(tv->width) / sizeof(flt64); + bounce_cur = bc_start + width_to_bytes(sv->width) / sizeof(flt64); } }