// ----------------------------------------------------------------
static char* test_lrec_csv_api() {
char* hdr_line = strdup("w,x,y,z");
slls_t* hdr_fields = split_csvlite_header_line(hdr_line, ',', FALSE);
header_keeper_t* pheader_keeper = header_keeper_alloc(hdr_line, hdr_fields);
char* data_line_1 = strdup("2,3,4,5");
lrec_t* prec_1 = lrec_parse_stdio_csvlite_data_line(pheader_keeper, data_line_1, ',', FALSE);
char* data_line_2 = strdup("6,7,8,9");
lrec_t* prec_2 = lrec_parse_stdio_csvlite_data_line(pheader_keeper, data_line_2, ',', FALSE);
mu_assert_lf(prec_1->field_count == 4);
mu_assert_lf(prec_2->field_count == 4);
mu_assert_lf(streq(lrec_get(prec_1, "w"), "2"));
mu_assert_lf(streq(lrec_get(prec_1, "x"), "3"));
mu_assert_lf(streq(lrec_get(prec_1, "y"), "4"));
mu_assert_lf(streq(lrec_get(prec_1, "z"), "5"));
mu_assert_lf(streq(lrec_get(prec_2, "w"), "6"));
mu_assert_lf(streq(lrec_get(prec_2, "x"), "7"));
mu_assert_lf(streq(lrec_get(prec_2, "y"), "8"));
mu_assert_lf(streq(lrec_get(prec_2, "z"), "9"));
lrec_remove(prec_1, "w");
mu_assert_lf(prec_1->field_count == 3);
mu_assert_lf(prec_2->field_count == 4);
mu_assert_lf(lrec_get(prec_1, "w") == NULL);
mu_assert_lf(streq(lrec_get(prec_2, "w"), "6"));
// Non-replacing-rename case
//lrec_dump_titled("Before rename", prec_1);
lrec_rename(prec_1, "x", "u");
//lrec_dump_titled("After rename", prec_1);
mu_assert_lf(prec_1->field_count == 3);
mu_assert_lf(lrec_get(prec_1, "x") == NULL);
mu_assert_lf(streq(lrec_get(prec_1, "u"), "3"));
// Replacing-rename case
//lrec_dump_titled("Before rename", prec_2);
lrec_rename(prec_2, "y", "z");
//lrec_dump_titled("After rename", prec_2);
mu_assert_lf(prec_2->field_count == 3);
mu_assert_lf(streq(lrec_get(prec_2, "w"), "6"));
mu_assert_lf(streq(lrec_get(prec_2, "x"), "7"));
mu_assert_lf(lrec_get(prec_2, "y") == NULL);
mu_assert_lf(streq(lrec_get(prec_2, "z"), "8"));
lrec_free(prec_1);
lrec_free(prec_2);
// xxx need a test case for alloc1,free1,alloc2,free2 w/ same hdr.
return NULL;
}
// ----------------------------------------------------------------
static char* test_lrec_unbacked_api() {
lrec_t* prec = lrec_unbacked_alloc();
mu_assert_lf(prec->field_count == 0);
lrec_put_no_free(prec, "x", "3");
mu_assert_lf(prec->field_count == 1);
mu_assert_lf(streq(lrec_get(prec, "x"), "3"));
lrec_put_no_free(prec, "y", "4");
mu_assert_lf(prec->field_count == 2);
mu_assert_lf(streq(lrec_get(prec, "x"), "3"));
mu_assert_lf(streq(lrec_get(prec, "y"), "4"));
lrec_put_no_free(prec, "x", "5");
mu_assert_lf(prec->field_count == 2);
mu_assert_lf(streq(lrec_get(prec, "x"), "5"));
mu_assert_lf(streq(lrec_get(prec, "y"), "4"));
lrec_remove(prec, "x");
mu_assert_lf(prec->field_count == 1);
mu_assert_lf(lrec_get(prec, "x") == NULL);
// Non-replacing-rename case
//lrec_dump_titled("Before rename", prec);
lrec_rename(prec, "y", "z");
//lrec_dump_titled("After rename", prec);
mu_assert_lf(prec->field_count == 1);
mu_assert_lf(lrec_get(prec, "x") == NULL);
mu_assert_lf(lrec_get(prec, "y") == NULL);
mu_assert_lf(streq(lrec_get(prec, "z"), "4"));
lrec_free(prec);
// Replacing-rename case
prec = lrec_unbacked_alloc();
lrec_put_no_free(prec, "x", "3");
lrec_put_no_free(prec, "y", "4");
lrec_put_no_free(prec, "z", "5");
mu_assert_lf(prec->field_count == 3);
//lrec_dump_titled("Before rename", prec);
lrec_rename(prec, "y", "z");
//lrec_dump_titled("After rename", prec);
mu_assert_lf(prec->field_count == 2);
mu_assert_lf(streq(lrec_get(prec, "x"), "3"));
mu_assert_lf(lrec_get(prec, "y") == NULL);
mu_assert_lf(streq(lrec_get(prec, "z"), "4"));
lrec_free(prec);
return NULL;
}
// ----------------------------------------------------------------
static sllv_t* mapper_tail_process(lrec_t* pinrec, context_t* pctx, void* pvstate) {
mapper_tail_state_t* pstate = pvstate;
if (pinrec != NULL) {
slls_t* pgroup_by_field_values = mlr_selected_values_from_record(pinrec, pstate->pgroup_by_field_names);
sllv_t* precord_list_for_group = lhmslv_get(pstate->precord_lists_by_group, pgroup_by_field_values);
if (precord_list_for_group == NULL) {
precord_list_for_group = sllv_alloc();
lhmslv_put(pstate->precord_lists_by_group, slls_copy(pgroup_by_field_values), precord_list_for_group);
}
if (precord_list_for_group->length >= pstate->tail_count) {
lrec_t* porec = sllv_pop(precord_list_for_group);
if (porec != NULL)
lrec_free(porec);
}
sllv_add(precord_list_for_group, pinrec);
return NULL;
}
else {
sllv_t* poutrecs = sllv_alloc();
for (lhmslve_t* pa = pstate->precord_lists_by_group->phead; pa != NULL; pa = pa->pnext) {
sllv_t* precord_list_for_group = pa->pvvalue;
for (sllve_t* pb = precord_list_for_group->phead; pb != NULL; pb = pb->pnext) {
sllv_add(poutrecs, pb->pvdata);
}
}
sllv_add(poutrecs, NULL);
return poutrecs;
}
}
static void lrec_writer_xtab_process_aligned(FILE* output_stream, lrec_t* prec, void* pvstate) {
if (prec == NULL)
return;
lrec_writer_xtab_state_t* pstate = pvstate;
if (pstate->record_count > 0LL)
fputs(pstate->ofs, output_stream);
pstate->record_count++;
int max_key_width = 1;
for (lrece_t* pe = prec->phead; pe != NULL; pe = pe->pnext) {
int key_width = strlen_for_utf8_display(pe->key);
if (key_width > max_key_width)
max_key_width = key_width;
}
for (lrece_t* pe = prec->phead; pe != NULL; pe = pe->pnext) {
// "%-*s" fprintf format isn't correct for non-ASCII UTF-8
fprintf(output_stream, "%s", pe->key);
int d = max_key_width - strlen_for_utf8_display(pe->key);
for (int i = 0; i < d; i++)
fputs(pstate->ops, output_stream);
fprintf(output_stream, "%s%s%s", pstate->ops, pe->value, pstate->ofs);
}
lrec_free(prec); // xxx cmt mem-mgmt
}
// ----------------------------------------------------------------
static sllv_t* mapper_nothing_process(lrec_t* pinrec, context_t* pctx, void* pvstate) {
if (pinrec != NULL) {
lrec_free(pinrec);
return NULL;
} else {
return sllv_single(NULL);
}
}
static sllv_t* mapper_stats1_process(lrec_t* pinrec, context_t* pctx, void* pvstate) {
mapper_stats1_state_t* pstate = pvstate;
if (pinrec != NULL) {
mapper_stats1_ingest(pinrec, pstate);
lrec_free(pinrec);
return NULL;
} else {
return mapper_stats1_emit(pstate);
}
}
// ----------------------------------------------------------------
static void handle_full_srec_assignment(
mlr_dsl_cst_statement_t* pstatement,
variables_t* pvars,
cst_outputs_t* pcst_outputs)
{
full_srec_assignment_state_t* pstate = pstatement->pvstate;
lrec_t* poutrec = lrec_unbacked_alloc(); // pinrec might be part of the RHS.
lhmsmv_t* pout_typed_overlay = lhmsmv_alloc();
rxval_evaluator_t* prhs_xevaluator = pstate->prhs_xevaluator;
boxed_xval_t boxed_xval = prhs_xevaluator->pprocess_func(prhs_xevaluator->pvstate, pvars);
if (!boxed_xval.xval.is_terminal) {
for (mlhmmv_level_entry_t* pe = boxed_xval.xval.pnext_level->phead; pe != NULL; pe = pe->pnext) {
mv_t* pkey = &pe->level_key;
mlhmmv_xvalue_t* pval = &pe->level_xvalue;
if (pval->is_terminal) { // xxx else collapse-down using json separator?
char* skey = mv_alloc_format_val(pkey);
// xxx if we're going to transfer here *and* free below, this needs a nullptr poke
// at the copy-from site
//mv_t val = boxed_xval.is_ephemeral ? pval->terminal_mlrval : mv_copy(&pval->terminal_mlrval);
mv_t val = mv_copy(&pval->terminal_mlrval);
// Write typed mlrval output to the typed overlay rather than into the lrec
// (which holds only string values).
//
// The rval_evaluator reads the overlay in preference to the lrec. E.g. if the
// input had "x"=>"abc","y"=>"def" but a previous statement had set "y"=>7.4 and
// "z"=>"ghi", then an expression right-hand side referring to $y would get the
// floating-point value 7.4. So we don't need to lrec_put the value here, and
// moreover should not for two reasons: (1) there is a performance hit of doing
// throwaway number-to-string formatting -- it's better to do it once at the
// end; (2) having the string values doubly owned by the typed overlay and the
// lrec would result in double frees, or awkward bookkeeping. However, the NR
// variable evaluator reads prec->field_count, so we need to put something here.
// And putting something statically allocated minimizes copying/freeing.
lhmsmv_put(pout_typed_overlay, mlr_strdup_or_die(skey), &val,
FREE_ENTRY_KEY | FREE_ENTRY_VALUE);
lrec_put(poutrec, skey, "bug", FREE_ENTRY_KEY);
}
}
if (boxed_xval.is_ephemeral) {
mlhmmv_xvalue_free(&boxed_xval.xval);
}
} else {
mlhmmv_xvalue_free(&boxed_xval.xval);
}
lrec_free(pvars->pinrec);
lhmsmv_free(pvars->ptyped_overlay);
pvars->pinrec = poutrec;
pvars->ptyped_overlay = pout_typed_overlay;
}
// ----------------------------------------------------------------
lrec_t* lrec_parse_mmap_xtab_single_ifs(file_reader_mmap_state_t* phandle, char ifs, char ips, int allow_repeat_ips) {
while (phandle->sol < phandle->eof && *phandle->sol == ifs)
phandle->sol++;
if (phandle->sol >= phandle->eof)
return NULL;
lrec_t* prec = lrec_unbacked_alloc();
// Loop over fields, one per line
while (TRUE) {
char* line = phandle->sol;
char* key = line;
char* value = "";
char* p;
// Construct one field
for (p = line; p < phandle->eof && *p; ) {
if (*p == ifs) {
*p = 0;
phandle->sol = p+1;
break;
} else if (*p == ips) {
key = line;
*p = 0;
p++;
if (allow_repeat_ips) {
while (*p == ips)
p++;
}
value = p;
} else {
p++;
}
}
if (p >= phandle->eof)
phandle->sol = p+1;
lrec_put_no_free(prec, key, value);
if (phandle->sol >= phandle->eof || *phandle->sol == ifs)
break;
}
if (prec->field_count == 0) {
lrec_free(prec);
return NULL;
} else {
return prec;
}
}
static void lrec_writer_xtab_process_unaligned(FILE* output_stream, lrec_t* prec, void* pvstate) {
if (prec == NULL)
return;
lrec_writer_xtab_state_t* pstate = pvstate;
if (pstate->record_count > 0LL)
fputs(pstate->ofs, output_stream);
pstate->record_count++;
for (lrece_t* pe = prec->phead; pe != NULL; pe = pe->pnext) {
// "%-*s" fprintf format isn't correct for non-ASCII UTF-8
fprintf(output_stream, "%s%s%s%s", pe->key, pstate->ops, pe->value, pstate->ofs);
}
lrec_free(prec); // xxx cmt mem-mgmt
}
// ----------------------------------------------------------------
static void lrec_writer_csv_process(FILE* output_stream, lrec_t* prec, void* pvstate) {
if (prec == NULL)
return;
lrec_writer_csv_state_t* pstate = pvstate;
char *ors = pstate->ors;
char *ofs = pstate->ofs;
if (pstate->plast_header_output != NULL) {
if (!lrec_keys_equal_list(prec, pstate->plast_header_output)) {
slls_free(pstate->plast_header_output);
pstate->plast_header_output = NULL;
if (pstate->num_header_lines_output > 0LL)
fputs(ors, output_stream);
}
}
if (pstate->plast_header_output == NULL) {
int nf = 0;
if (!pstate->headerless_csv_output) {
for (lrece_t* pe = prec->phead; pe != NULL; pe = pe->pnext) {
if (nf > 0)
fputs(ofs, output_stream);
pstate->pquoted_output_func(output_stream, pe->key, pstate->ors, pstate->ofs,
pstate->orslen, pstate->ofslen);
nf++;
}
fputs(ors, output_stream);
}
pstate->plast_header_output = mlr_copy_keys_from_record(prec);
pstate->num_header_lines_output++;
}
int nf = 0;
for (lrece_t* pe = prec->phead; pe != NULL; pe = pe->pnext) {
if (nf > 0)
fputs(ofs, output_stream);
pstate->pquoted_output_func(output_stream, pe->value, pstate->ors, pstate->ofs,
pstate->orslen, pstate->ofslen);
nf++;
}
fputs(ors, output_stream);
pstate->onr++;
// See ../README.md for memory-management conventions
lrec_free(prec);
}
// ----------------------------------------------------------------
static char* test_lrec_xtab_api() {
char* line_1 = strdup("w 2");
char* line_2 = strdup("x 3");
char* line_3 = strdup("y 4");
char* line_4 = strdup("z 5");
slls_t* pxtab_lines = slls_alloc();
slls_add_with_free(pxtab_lines, line_1);
slls_add_with_free(pxtab_lines, line_2);
slls_add_with_free(pxtab_lines, line_3);
slls_add_with_free(pxtab_lines, line_4);
lrec_t* prec = lrec_parse_stdio_xtab(pxtab_lines, ' ', TRUE);
mu_assert_lf(prec->field_count == 4);
mu_assert_lf(streq(lrec_get(prec, "w"), "2"));
mu_assert_lf(streq(lrec_get(prec, "x"), "3"));
mu_assert_lf(streq(lrec_get(prec, "y"), "4"));
mu_assert_lf(streq(lrec_get(prec, "z"), "5"));
lrec_remove(prec, "w");
mu_assert_lf(prec->field_count == 3);
mu_assert_lf(lrec_get(prec, "w") == NULL);
// Non-replacing-rename case
//lrec_dump_titled("Before rename", prec);
lrec_rename(prec, "x", "u");
//lrec_dump_titled("After rename", prec);
mu_assert_lf(prec->field_count == 3);
mu_assert_lf(lrec_get(prec, "x") == NULL);
mu_assert_lf(streq(lrec_get(prec, "u"), "3"));
// Replacing-rename case
//lrec_dump_titled("Before rename", prec);
lrec_rename(prec, "y", "z");
//lrec_dump_titled("After rename", prec);
mu_assert_lf(prec->field_count == 2);
mu_assert_lf(streq(lrec_get(prec, "u"), "3"));
mu_assert_lf(lrec_get(prec, "y") == NULL);
mu_assert_lf(streq(lrec_get(prec, "z"), "4"));
lrec_free(prec);
return NULL;
}
static void lrec_reader_stdio_json_free(lrec_reader_t* preader) {
lrec_reader_stdio_json_state_t* pstate = preader->pvstate;
for (sllve_t* pe = pstate->ptop_level_json_objects->phead; pe != NULL; pe = pe->pnext) {
json_value_t* top_level_json_object = pe->pvvalue;
json_free_value(top_level_json_object);
}
sllv_free(pstate->ptop_level_json_objects);
for (sllve_t* pf = pstate->precords->phead; pf != NULL; pf = pf->pnext) {
lrec_t* prec = pf->pvvalue;
lrec_free(prec);
}
sllv_free(pstate->precords);
pstate->precords = NULL;
free(pstate);
free(preader);
}
static void lrec_writer_csv_process(FILE* output_stream, lrec_t* prec, void* pvstate) {
if (prec == NULL)
return;
lrec_writer_csv_state_t* pstate = pvstate;
char ors = pstate->ors;
char ofs = pstate->ofs;
if (pstate->plast_header_output != NULL) {
// xxx make a fcn to compare these w/o copy: put it in mixutil.
if (!lrec_keys_equal_list(prec, pstate->plast_header_output)) {
slls_free(pstate->plast_header_output);
pstate->plast_header_output = NULL;
if (pstate->num_header_lines_output > 0LL)
fputc(ors, output_stream);
}
}
if (pstate->plast_header_output == NULL) {
int nf = 0;
for (lrece_t* pe = prec->phead; pe != NULL; pe = pe->pnext) {
if (nf > 0)
fputc(ofs, output_stream);
fputs(pe->key, output_stream);
nf++;
}
fputc(ors, output_stream);
pstate->plast_header_output = mlr_copy_keys_from_record(prec);
pstate->num_header_lines_output++;
}
int nf = 0;
for (lrece_t* pe = prec->phead; pe != NULL; pe = pe->pnext) {
if (nf > 0)
fputc(ofs, output_stream);
fputs(pe->value, output_stream);
nf++;
}
fputc(ors, output_stream);
pstate->onr++;
lrec_free(prec); // xxx cmt mem-mgmt
}
// ----------------------------------------------------------------
static void lrec_writer_dkvp_process(FILE* output_stream, lrec_t* prec, void* pvstate) {
if (prec == NULL)
return;
lrec_writer_dkvp_state_t* pstate = pvstate;
char* ors = pstate->ors;
char* ofs = pstate->ofs;
char* ops = pstate->ops;
int nf = 0;
for (lrece_t* pe = prec->phead; pe != NULL; pe = pe->pnext) {
if (nf > 0)
fputs(ofs, output_stream);
fputs(pe->key, output_stream);
fputs(ops, output_stream);
fputs(pe->value, output_stream);
nf++;
}
fputs(ors, output_stream);
lrec_free(prec); // end of baton-pass
}
// ----------------------------------------------------------------
// xxx if empty key then make a way to communicate back to the reader that it
// can stop reading further records -- ?
static sllv_t* mapper_head_process(lrec_t* pinrec, context_t* pctx, void* pvstate) {
mapper_head_state_t* pstate = pvstate;
if (pinrec != NULL) {
slls_t* pgroup_by_field_values = mlr_selected_values_from_record(pinrec, pstate->pgroup_by_field_names);
unsigned long long* pcount_for_group = lhmslv_get(pstate->precord_lists_by_group, pgroup_by_field_values);
if (pcount_for_group == NULL) {
pcount_for_group = mlr_malloc_or_die(sizeof(unsigned long long));
*pcount_for_group = 0LL;
lhmslv_put(pstate->precord_lists_by_group, slls_copy(pgroup_by_field_values), pcount_for_group);
}
(*pcount_for_group)++;
if (*pcount_for_group <= pstate->head_count) {
return sllv_single(pinrec);
} else {
lrec_free(pinrec);
return NULL;
}
}
else {
return sllv_single(NULL);
}
}
// ----------------------------------------------------------------
static sllv_t* mapper_regularize_process(lrec_t* pinrec, context_t* pctx, void* pvstate) {
if (pinrec != NULL) {
mapper_regularize_state_t* pstate = (mapper_regularize_state_t*)pvstate;
slls_t* current_sorted_field_names = mlr_reference_keys_from_record(pinrec);
slls_sort(current_sorted_field_names);
slls_t* previous_sorted_field_names = lhmslv_get(pstate->psorted_to_original, current_sorted_field_names);
if (previous_sorted_field_names == NULL) {
previous_sorted_field_names = slls_copy(current_sorted_field_names);
lhmslv_put(pstate->psorted_to_original, previous_sorted_field_names, mlr_copy_keys_from_record(pinrec));
return sllv_single(pinrec);
} else {
lrec_t* poutrec = lrec_unbacked_alloc();
for (sllse_t* pe = previous_sorted_field_names->phead; pe != NULL; pe = pe->pnext) {
lrec_put(poutrec, pe->value, strdup(lrec_get(pinrec, pe->value)), LREC_FREE_ENTRY_VALUE);
}
lrec_free(pinrec);
return sllv_single(poutrec);
}
}
else {
return sllv_single(NULL);
}
}
// ----------------------------------------------------------------
static char* test_lrec_nidx_api() {
char* line = strdup("a,b,c,d");
lrec_t* prec = lrec_parse_stdio_nidx(line, ',', FALSE);
mu_assert_lf(prec->field_count == 4);
mu_assert_lf(streq(lrec_get(prec, "1"), "a"));
mu_assert_lf(streq(lrec_get(prec, "2"), "b"));
mu_assert_lf(streq(lrec_get(prec, "3"), "c"));
mu_assert_lf(streq(lrec_get(prec, "4"), "d"));
lrec_remove(prec, "1");
mu_assert_lf(prec->field_count == 3);
mu_assert_lf(lrec_get(prec, "1") == NULL);
// Non-replacing-rename case
lrec_dump_titled("Before rename", prec);
lrec_rename(prec, "2", "u");
lrec_dump_titled("After rename", prec);
mu_assert_lf(prec->field_count == 3);
mu_assert_lf(lrec_get(prec, "2") == NULL);
mu_assert_lf(streq(lrec_get(prec, "u"), "b"));
// Replacing-rename case
lrec_dump_titled("Before rename", prec);
lrec_rename(prec, "3", "4");
lrec_dump_titled("After rename", prec);
mu_assert_lf(prec->field_count == 2);
mu_assert_lf(streq(lrec_get(prec, "u"), "b"));
mu_assert_lf(lrec_get(prec, "3") == NULL);
mu_assert_lf(streq(lrec_get(prec, "4"), "c"));
lrec_free(prec);
return NULL;
}
// ----------------------------------------------------------------
static char* test_lrec_dkvp_api() {
char* line = strdup("w=2,x=3,y=4,z=5");
lrec_t* prec = lrec_parse_stdio_dkvp(line, ',', '=', FALSE);
mu_assert_lf(prec->field_count == 4);
mu_assert_lf(streq(lrec_get(prec, "w"), "2"));
mu_assert_lf(streq(lrec_get(prec, "x"), "3"));
mu_assert_lf(streq(lrec_get(prec, "y"), "4"));
mu_assert_lf(streq(lrec_get(prec, "z"), "5"));
lrec_remove(prec, "w");
mu_assert_lf(prec->field_count == 3);
mu_assert_lf(lrec_get(prec, "w") == NULL);
// Non-replacing-rename case
//lrec_dump_titled("Before rename", prec);
lrec_rename(prec, "x", "u");
//lrec_dump_titled("After rename", prec);
mu_assert_lf(prec->field_count == 3);
mu_assert_lf(lrec_get(prec, "x") == NULL);
mu_assert_lf(streq(lrec_get(prec, "u"), "3"));
// Replacing-rename case
//lrec_dump_titled("Before rename", prec);
lrec_rename(prec, "y", "z");
//lrec_dump_titled("After rename", prec);
mu_assert_lf(prec->field_count == 2);
mu_assert_lf(streq(lrec_get(prec, "u"), "3"));
mu_assert_lf(lrec_get(prec, "y") == NULL);
mu_assert_lf(streq(lrec_get(prec, "z"), "4"));
lrec_free(prec);
return NULL;
}
// The stdio-JSON lrec-reader is non-streaming: we ingest all records here in the start-of-file hook.
// Then in the process method we pop one lrec off the list at a time, until they are all exhausted.
// This is in contrast to other Miller lrec-readers.
//
// It would be possible to extend the streaming framework to also have an end-of-file hook
// which we could use here to free parsed-JSON data. However, we simply leverage the start-of-file
// hook for the *next* file (if any) or the free method (if not): these free parsed-JSON structures
// from the previous file (if any).
static void lrec_reader_stdio_json_sof(void* pvstate, void* pvhandle) {
lrec_reader_stdio_json_state_t* pstate = pvstate;
file_ingestor_stdio_state_t* phandle = pvhandle;
json_char* json_input = (json_char*)phandle->sof;
json_value_t* parsed_top_level_json;
json_char error_buf[JSON_ERROR_MAX];
if (pstate->ptop_level_json_objects != NULL) {
for (sllve_t* pe = pstate->ptop_level_json_objects->phead; pe != NULL; pe = pe->pnext) {
json_value_t* top_level_json_object = pe->pvvalue;
json_value_free(top_level_json_object);
}
sllv_free(pstate->ptop_level_json_objects);
}
if (pstate->precords != NULL) {
for (sllve_t* pf = pstate->precords->phead; pf != NULL; pf = pf->pnext) {
lrec_t* prec = pf->pvvalue;
lrec_free(prec);
}
sllv_free(pstate->precords);
}
pstate->ptop_level_json_objects = sllv_alloc();
pstate->precords = sllv_alloc();
// This enables us to handle input of the form
//
// { "a" : 1 }
// { "b" : 2 }
// { "c" : 3 }
//
// in addition to
//
// [
// { "a" : 1 }
// { "b" : 2 }
// { "c" : 3 }
// ]
//
// This is in line with what jq can handle. In this case, json_parse will return
// once for each top-level item and will give us back a pointer to the start of
// the rest of the input stream, so we can call json_parse on the rest until it is
// all exhausted.
json_char* item_start = json_input;
int length = phandle->eof - phandle->sof;
while (TRUE) {
parsed_top_level_json = json_parse(item_start, length, error_buf, &item_start);
if (parsed_top_level_json == NULL) {
fprintf(stderr, "Unable to parse JSON data: %s\n", error_buf);
exit(1);
}
// The lrecs have their string pointers pointing into the parsed-JSON objects (for
// efficiency) so it's important we not free the latter until our free method.
reference_json_objects_as_lrecs(pstate->precords, parsed_top_level_json, pstate->json_flatten_separator);
if (item_start == NULL)
break;
if (*item_start == 0)
break;
length -= (item_start - json_input);
json_input = item_start;
}
}
// ----------------------------------------------------------------
static void print_and_free_record_list(sllv_t* precords, FILE* output_stream, char* ors, char ofs, int left_align) {
if (precords->length == 0) {
sllv_free(precords);
return;
}
lrec_t* prec1 = precords->phead->pvvalue;
int* max_widths = mlr_malloc_or_die(sizeof(int) * prec1->field_count);
int j = 0;
for (lrece_t* pe = prec1->phead; pe != NULL; pe = pe->pnext, j++) {
max_widths[j] = strlen_for_utf8_display(pe->key);
}
for (sllve_t* pnode = precords->phead; pnode != NULL; pnode = pnode->pnext) {
lrec_t* prec = pnode->pvvalue;
j = 0;
for (lrece_t* pe = prec->phead; pe != NULL; pe = pe->pnext, j++) {
int width = strlen_for_utf8_display(pe->value);
if (width > max_widths[j])
max_widths[j] = width;
}
}
int onr = 0;
for (sllve_t* pnode = precords->phead; pnode != NULL; pnode = pnode->pnext, onr++) {
lrec_t* prec = pnode->pvvalue;
if (onr == 0) {
j = 0;
for (lrece_t* pe = prec->phead; pe != NULL; pe = pe->pnext, j++) {
if (j > 0) {
fputc(ofs, output_stream);
}
if (left_align) {
if (pe->pnext == NULL) {
fprintf(output_stream, "%s", pe->key);
} else {
// "%-*s" fprintf format isn't correct for non-ASCII UTF-8
fprintf(output_stream, "%s", pe->key);
int d = max_widths[j] - strlen_for_utf8_display(pe->key);
for (int i = 0; i < d; i++)
fputc(ofs, output_stream);
}
} else {
int d = max_widths[j] - strlen_for_utf8_display(pe->key);
for (int i = 0; i < d; i++)
fputc(ofs, output_stream);
fprintf(output_stream, "%s", pe->key);
}
}
fputs(ors, output_stream);
}
j = 0;
for (lrece_t* pe = prec->phead; pe != NULL; pe = pe->pnext, j++) {
if (j > 0) {
fputc(ofs, output_stream);
}
char* value = pe->value;
if (*value == 0) // empty string
value = "-";
if (left_align) {
if (pe->pnext == NULL) {
fprintf(output_stream, "%s", value);
} else {
fprintf(output_stream, "%s", value);
int d = max_widths[j] - strlen_for_utf8_display(value);
for (int i = 0; i < d; i++)
fputc(ofs, output_stream);
}
} else {
int d = max_widths[j] - strlen_for_utf8_display(value);
for (int i = 0; i < d; i++)
fputc(ofs, output_stream);
fprintf(output_stream, "%s", value);
}
}
fputs(ors, output_stream);
lrec_free(prec); // end of baton-pass
}
free(max_widths);
sllv_free(precords);
}
static lrec_t* lrec_parse_mmap_xtab_single_ifs_multi_ips(file_reader_mmap_state_t* phandle, char ifs,
lrec_reader_mmap_xtab_state_t* pstate, context_t* pctx)
{
if (pstate->do_auto_line_term) {
// Skip over otherwise empty LF-only or CRLF-only lines.
while (phandle->sol < phandle->eof) {
if (*phandle->sol == '\n') {
context_set_autodetected_lf(pctx);
phandle->sol += 1;
} else if (*phandle->sol == '\r') {
char* q = phandle->sol + 1;
if (q < phandle->eof && *q == '\n') {
context_set_autodetected_crlf(pctx);
phandle->sol += 2;
} else {
phandle->sol += 1;
}
} else {
break;
}
}
} else {
// Skip over otherwise empty IFS-only lines.
while (phandle->sol < phandle->eof && *phandle->sol == ifs)
phandle->sol++;
}
if (phandle->sol >= phandle->eof)
return NULL;
char* ips = pstate->ips;
int ipslen = pstate->ipslen;
lrec_t* prec = lrec_unbacked_alloc();
// Loop over fields, one per line
while (TRUE) {
if (phandle->sol >= phandle->eof)
break;
char* line = phandle->sol;
char* key = line;
char* value = "";
char* p;
// Construct one field
int saw_eol = FALSE;
for (p = line; p < phandle->eof && *p; ) {
if (*p == ifs) {
*p = 0;
if (pstate->do_auto_line_term) {
if (p > line && p[-1] == '\r') {
p[-1] = 0;
context_set_autodetected_crlf(pctx);
} else {
context_set_autodetected_lf(pctx);
}
}
phandle->sol = p+1;
saw_eol = TRUE;
break;
} else if (streqn(p, ips, ipslen)) {
key = line;
*p = 0;
p += ipslen;
if (pstate->allow_repeat_ips) {
while (streqn(p, ips, ipslen))
p += ipslen;
}
value = p;
} else {
p++;
}
}
if (p >= phandle->eof)
phandle->sol = p+1;
if (saw_eol) {
// Easy and simple case: we read until end of line. We zero-poked the irs to a null character to terminate
// the C string so it's OK to retain a pointer to that.
lrec_put(prec, key, value, NO_FREE);
} else {
// Messier case: we read to end of file without seeing end of line. We can't always zero-poke a null
// character to terminate the C string: if the file size is not a multiple of the OS page size it'll work
// (it's our copy-on-write memory). But if the file size is a multiple of the page size, then zero-poking at
// EOF is one byte past the page and that will segv us.
char* copy = mlr_alloc_string_from_char_range(value, phandle->eof - value);
lrec_put(prec, key, copy, FREE_ENTRY_VALUE);
}
if (phandle->sol >= phandle->eof || *phandle->sol == ifs)
break;
}
if (prec->field_count == 0) {
lrec_free(prec);
return NULL;
} else {
return prec;
}
}
static sllv_t* mapper_step_process(lrec_t* pinrec, context_t* pctx, void* pvstate) {
mapper_step_state_t* pstate = pvstate;
if (pinrec == NULL)
return sllv_single(NULL);
// ["s", "t"]
slls_t* pvalue_field_values = mlr_selected_values_from_record(pinrec, pstate->pvalue_field_names);
slls_t* pgroup_by_field_values = mlr_selected_values_from_record(pinrec, pstate->pgroup_by_field_names);
if (pgroup_by_field_values->length != pstate->pgroup_by_field_names->length) {
lrec_free(pinrec);
return NULL;
}
lhmsv_t* group_to_acc_field = lhmslv_get(pstate->groups, pgroup_by_field_values);
if (group_to_acc_field == NULL) {
group_to_acc_field = lhmsv_alloc();
lhmslv_put(pstate->groups, slls_copy(pgroup_by_field_values), group_to_acc_field);
}
sllse_t* pa = pstate->pvalue_field_names->phead;
sllse_t* pb = pvalue_field_values->phead;
// for x=1 and y=2
for ( ; pa != NULL && pb != NULL; pa = pa->pnext, pb = pb->pnext) {
char* value_field_name = pa->value;
char* value_field_sval = pb->value;
int have_dval = FALSE;
double value_field_dval = -999.0;
lhmsv_t* acc_field_to_acc_state = lhmsv_get(group_to_acc_field, value_field_name);
if (acc_field_to_acc_state == NULL) {
acc_field_to_acc_state = lhmsv_alloc();
lhmsv_put(group_to_acc_field, value_field_name, acc_field_to_acc_state);
}
// for "delta", "rsum"
sllse_t* pc = pstate->pstepper_names->phead;
for ( ; pc != NULL; pc = pc->pnext) {
char* step_name = pc->value;
step_t* pstep = lhmsv_get(acc_field_to_acc_state, step_name);
if (pstep == NULL) {
pstep = make_step(step_name, value_field_name);
if (pstep == NULL) {
fprintf(stderr, "mlr step: stepper \"%s\" not found.\n",
step_name);
exit(1);
}
lhmsv_put(acc_field_to_acc_state, step_name, pstep);
}
if (pstep->psprocess_func != NULL) {
pstep->psprocess_func(pstep->pvstate, value_field_sval, pinrec);
}
if (pstep->pdprocess_func != NULL) {
if (!have_dval) {
value_field_dval = mlr_double_from_string_or_die(value_field_sval);
have_dval = TRUE;
}
pstep->pdprocess_func(pstep->pvstate, value_field_dval, pinrec);
}
}
}
return sllv_single(pinrec);
}
static lrec_t* lrec_parse_mmap_xtab_multi_ifs_multi_ips(file_reader_mmap_state_t* phandle,
lrec_reader_mmap_xtab_state_t* pstate)
{
char* ips = pstate->ips;
int ipslen = pstate->ipslen;
char* ifs = pstate->ifs;
int ifslen = pstate->ifslen;
// Skip blank lines
while (phandle->eof - phandle->sol >= ifslen && streqn(phandle->sol, ifs, ifslen)) {
phandle->sol += ifslen;
}
if (phandle->sol >= phandle->eof)
return NULL;
lrec_t* prec = lrec_unbacked_alloc();
// Loop over fields, one per line
while (TRUE) {
if (phandle->sol >= phandle->eof)
break;
char* line = phandle->sol;
char* key = line;
char* value = "";
char* p;
// Construct one field
int saw_eol = FALSE;
for (p = line; p < phandle->eof && *p; ) {
if (streqn(p, ifs, ifslen)) {
*p = 0;
phandle->sol = p + ifslen;
saw_eol = TRUE;
break;
} else if (streqn(p, ips, ipslen)) {
key = line;
*p = 0;
p += ipslen;
if (pstate->allow_repeat_ips) {
while (streqn(p, ips, ipslen))
p += ipslen;
}
value = p;
} else {
p++;
}
}
if (p >= phandle->eof)
phandle->sol = p+1;
if (saw_eol) {
// Easy and simple case: we read until end of line. We zero-poked the irs to a null character to terminate
// the C string so it's OK to retain a pointer to that.
lrec_put(prec, key, value, NO_FREE);
} else {
// Messier case: we read to end of file without seeing end of line. We can't always zero-poke a null
// character to terminate the C string: if the file size is not a multiple of the OS page size it'll work
// (it's our copy-on-write memory). But if the file size is a multiple of the page size, then zero-poking at
// EOF is one byte past the page and that will segv us.
char* copy = mlr_alloc_string_from_char_range(value, phandle->eof - value);
lrec_put(prec, key, copy, FREE_ENTRY_VALUE);
}
if (phandle->sol >= phandle->eof || streqn(phandle->sol, ifs, ifslen))
break;
}
if (prec->field_count == 0) {
lrec_free(prec);
return NULL;
} else {
return prec;
}
}
