diff options
Diffstat (limited to 'qemu/qapi/string-output-visitor.c')
| -rw-r--r-- | qemu/qapi/string-output-visitor.c | 366 |
1 files changed, 0 insertions, 366 deletions
diff --git a/qemu/qapi/string-output-visitor.c b/qemu/qapi/string-output-visitor.c deleted file mode 100644 index c2e5c5b92..000000000 --- a/qemu/qapi/string-output-visitor.c +++ /dev/null @@ -1,366 +0,0 @@ -/* - * String printing Visitor - * - * Copyright Red Hat, Inc. 2012-2016 - * - * Author: Paolo Bonzini <pbonzini@redhat.com> - * - * This work is licensed under the terms of the GNU LGPL, version 2.1 or later. - * See the COPYING.LIB file in the top-level directory. - * - */ - -#include "qemu/osdep.h" -#include "qemu-common.h" -#include "qapi/string-output-visitor.h" -#include "qapi/visitor-impl.h" -#include "qemu/host-utils.h" -#include <math.h> -#include "qemu/range.h" - -enum ListMode { - LM_NONE, /* not traversing a list of repeated options */ - LM_STARTED, /* start_list() succeeded */ - - LM_IN_PROGRESS, /* next_list() has been called. - * - * Generating the next list link will consume the most - * recently parsed QemuOpt instance of the repeated - * option. - * - * Parsing a value into the list link will examine the - * next QemuOpt instance of the repeated option, and - * possibly enter LM_SIGNED_INTERVAL or - * LM_UNSIGNED_INTERVAL. - */ - - LM_SIGNED_INTERVAL, /* next_list() has been called. - * - * Generating the next list link will consume the most - * recently stored element from the signed interval, - * parsed from the most recent QemuOpt instance of the - * repeated option. This may consume QemuOpt itself - * and return to LM_IN_PROGRESS. - * - * Parsing a value into the list link will store the - * next element of the signed interval. - */ - - LM_UNSIGNED_INTERVAL,/* Same as above, only for an unsigned interval. */ - - LM_END -}; - -typedef enum ListMode ListMode; - -struct StringOutputVisitor -{ - Visitor visitor; - bool human; - GString *string; - bool head; - ListMode list_mode; - union { - int64_t s; - uint64_t u; - } range_start, range_end; - GList *ranges; -}; - -static StringOutputVisitor *to_sov(Visitor *v) -{ - return container_of(v, StringOutputVisitor, visitor); -} - -static void string_output_set(StringOutputVisitor *sov, char *string) -{ - if (sov->string) { - g_string_free(sov->string, true); - } - sov->string = g_string_new(string); - g_free(string); -} - -static void string_output_append(StringOutputVisitor *sov, int64_t a) -{ - Range *r = g_malloc0(sizeof(*r)); - r->begin = a; - r->end = a + 1; - sov->ranges = g_list_insert_sorted_merged(sov->ranges, r, range_compare); -} - -static void string_output_append_range(StringOutputVisitor *sov, - int64_t s, int64_t e) -{ - Range *r = g_malloc0(sizeof(*r)); - r->begin = s; - r->end = e + 1; - sov->ranges = g_list_insert_sorted_merged(sov->ranges, r, range_compare); -} - -static void format_string(StringOutputVisitor *sov, Range *r, bool next, - bool human) -{ - if (r->end - r->begin > 1) { - if (human) { - g_string_append_printf(sov->string, "0x%" PRIx64 "-0x%" PRIx64, - r->begin, r->end - 1); - - } else { - g_string_append_printf(sov->string, "%" PRId64 "-%" PRId64, - r->begin, r->end - 1); - } - } else { - if (human) { - g_string_append_printf(sov->string, "0x%" PRIx64, r->begin); - } else { - g_string_append_printf(sov->string, "%" PRId64, r->begin); - } - } - if (next) { - g_string_append(sov->string, ","); - } -} - -static void print_type_int64(Visitor *v, const char *name, int64_t *obj, - Error **errp) -{ - StringOutputVisitor *sov = to_sov(v); - GList *l; - - switch (sov->list_mode) { - case LM_NONE: - string_output_append(sov, *obj); - break; - - case LM_STARTED: - sov->range_start.s = *obj; - sov->range_end.s = *obj; - sov->list_mode = LM_IN_PROGRESS; - return; - - case LM_IN_PROGRESS: - if (sov->range_end.s + 1 == *obj) { - sov->range_end.s++; - } else { - if (sov->range_start.s == sov->range_end.s) { - string_output_append(sov, sov->range_end.s); - } else { - assert(sov->range_start.s < sov->range_end.s); - string_output_append_range(sov, sov->range_start.s, - sov->range_end.s); - } - - sov->range_start.s = *obj; - sov->range_end.s = *obj; - } - return; - - case LM_END: - if (sov->range_end.s + 1 == *obj) { - sov->range_end.s++; - assert(sov->range_start.s < sov->range_end.s); - string_output_append_range(sov, sov->range_start.s, - sov->range_end.s); - } else { - if (sov->range_start.s == sov->range_end.s) { - string_output_append(sov, sov->range_end.s); - } else { - assert(sov->range_start.s < sov->range_end.s); - - string_output_append_range(sov, sov->range_start.s, - sov->range_end.s); - } - string_output_append(sov, *obj); - } - break; - - default: - abort(); - } - - l = sov->ranges; - while (l) { - Range *r = l->data; - format_string(sov, r, l->next != NULL, false); - l = l->next; - } - - if (sov->human) { - l = sov->ranges; - g_string_append(sov->string, " ("); - while (l) { - Range *r = l->data; - format_string(sov, r, l->next != NULL, true); - l = l->next; - } - g_string_append(sov->string, ")"); - } -} - -static void print_type_uint64(Visitor *v, const char *name, uint64_t *obj, - Error **errp) -{ - /* FIXME: print_type_int64 mishandles values over INT64_MAX */ - int64_t i = *obj; - print_type_int64(v, name, &i, errp); -} - -static void print_type_size(Visitor *v, const char *name, uint64_t *obj, - Error **errp) -{ - StringOutputVisitor *sov = to_sov(v); - static const char suffixes[] = { 'B', 'K', 'M', 'G', 'T', 'P', 'E' }; - uint64_t div, val; - char *out; - int i; - - if (!sov->human) { - out = g_strdup_printf("%"PRIu64, *obj); - string_output_set(sov, out); - return; - } - - val = *obj; - - /* The exponent (returned in i) minus one gives us - * floor(log2(val * 1024 / 1000). The correction makes us - * switch to the higher power when the integer part is >= 1000. - */ - frexp(val / (1000.0 / 1024.0), &i); - i = (i - 1) / 10; - assert(i < ARRAY_SIZE(suffixes)); - div = 1ULL << (i * 10); - - out = g_strdup_printf("%"PRIu64" (%0.3g %c%s)", val, - (double)val/div, suffixes[i], i ? "iB" : ""); - string_output_set(sov, out); -} - -static void print_type_bool(Visitor *v, const char *name, bool *obj, - Error **errp) -{ - StringOutputVisitor *sov = to_sov(v); - string_output_set(sov, g_strdup(*obj ? "true" : "false")); -} - -static void print_type_str(Visitor *v, const char *name, char **obj, - Error **errp) -{ - StringOutputVisitor *sov = to_sov(v); - char *out; - - if (sov->human) { - out = *obj ? g_strdup_printf("\"%s\"", *obj) : g_strdup("<null>"); - } else { - out = g_strdup(*obj ? *obj : ""); - } - string_output_set(sov, out); -} - -static void print_type_number(Visitor *v, const char *name, double *obj, - Error **errp) -{ - StringOutputVisitor *sov = to_sov(v); - string_output_set(sov, g_strdup_printf("%f", *obj)); -} - -static void -start_list(Visitor *v, const char *name, Error **errp) -{ - StringOutputVisitor *sov = to_sov(v); - - /* we can't traverse a list in a list */ - assert(sov->list_mode == LM_NONE); - sov->list_mode = LM_STARTED; - sov->head = true; -} - -static GenericList *next_list(Visitor *v, GenericList **list, size_t size) -{ - StringOutputVisitor *sov = to_sov(v); - GenericList *ret = NULL; - if (*list) { - if (sov->head) { - ret = *list; - } else { - ret = (*list)->next; - } - - if (sov->head) { - if (ret && ret->next == NULL) { - sov->list_mode = LM_NONE; - } - sov->head = false; - } else { - if (ret && ret->next == NULL) { - sov->list_mode = LM_END; - } - } - } - - return ret; -} - -static void end_list(Visitor *v) -{ - StringOutputVisitor *sov = to_sov(v); - - assert(sov->list_mode == LM_STARTED || - sov->list_mode == LM_END || - sov->list_mode == LM_NONE || - sov->list_mode == LM_IN_PROGRESS); - sov->list_mode = LM_NONE; - sov->head = true; - -} - -char *string_output_get_string(StringOutputVisitor *sov) -{ - char *string = g_string_free(sov->string, false); - sov->string = NULL; - return string; -} - -Visitor *string_output_get_visitor(StringOutputVisitor *sov) -{ - return &sov->visitor; -} - -static void free_range(void *range, void *dummy) -{ - g_free(range); -} - -void string_output_visitor_cleanup(StringOutputVisitor *sov) -{ - if (sov->string) { - g_string_free(sov->string, true); - } - - g_list_foreach(sov->ranges, free_range, NULL); - g_list_free(sov->ranges); - g_free(sov); -} - -StringOutputVisitor *string_output_visitor_new(bool human) -{ - StringOutputVisitor *v; - - v = g_malloc0(sizeof(*v)); - - v->string = g_string_new(NULL); - v->human = human; - v->visitor.type_enum = output_type_enum; - v->visitor.type_int64 = print_type_int64; - v->visitor.type_uint64 = print_type_uint64; - v->visitor.type_size = print_type_size; - v->visitor.type_bool = print_type_bool; - v->visitor.type_str = print_type_str; - v->visitor.type_number = print_type_number; - v->visitor.start_list = start_list; - v->visitor.next_list = next_list; - v->visitor.end_list = end_list; - - return v; -} |