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#include <stdint.h>
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#include <unistd.h>
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#include <fcntl.h>
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#define ARGV_DRIVER
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#include <sofort/sofort.h>
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#include "sofort_driver_impl.h"
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#include "argv/argv.h"
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extern const struct argv_option sfrt_default_options[];
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struct sfrt_driver_ctx_alloc {
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struct argv_meta * meta;
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struct sfrt_driver_ctx_impl ctx;
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uint64_t guard;
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const char * units[];
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};
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static uint32_t sfrt_argv_flags(uint32_t flags)
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{
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uint32_t ret = 0;
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if (flags & SFRT_DRIVER_VERBOSITY_NONE)
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ret |= ARGV_VERBOSITY_NONE;
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if (flags & SFRT_DRIVER_VERBOSITY_ERRORS)
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ret |= ARGV_VERBOSITY_ERRORS;
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if (flags & SFRT_DRIVER_VERBOSITY_STATUS)
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ret |= ARGV_VERBOSITY_STATUS;
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return ret;
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}
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static int sfrt_driver_usage(
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const char * program,
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const char * arg,
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const struct argv_option * options,
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struct argv_meta * meta)
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{
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char header[512];
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snprintf(header,sizeof(header),
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"Usage: %s [options] <file>...\n" "Options:\n",
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program);
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argv_usage(stdout,header,options,arg);
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argv_free(meta);
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return SFRT_USAGE;
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}
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static struct sfrt_driver_ctx_impl * sfrt_driver_ctx_alloc(struct argv_meta * meta, size_t nunits)
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{
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struct sfrt_driver_ctx_alloc * ictx;
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size_t size;
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struct argv_entry * entry;
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const char ** units;
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size = sizeof(struct sfrt_driver_ctx_alloc);
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size += (nunits+1)*sizeof(const char *);
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if (!(ictx = calloc(size,1)))
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return 0;
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for (entry=meta->entries,units=ictx->units; entry->fopt || entry->arg; entry++)
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if (!entry->fopt)
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*units++ = entry->arg;
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ictx->ctx.ctx.units = ictx->units;
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return &ictx->ctx;
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}
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int sfrt_get_driver_ctx_fail(struct argv_meta * meta)
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{
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argv_free(meta);
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return -1;
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}
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int sfrt_get_driver_ctx(
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const char ** argv,
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const char ** envp,
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uint32_t flags,
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struct sfrt_driver_ctx ** pctx)
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{
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struct sfrt_driver_ctx_impl * ctx;
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const struct argv_option * options;
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struct argv_meta * meta;
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struct argv_entry * entry;
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size_t nunits;
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uint64_t dflags;
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uint64_t aflags;
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const char * program;
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const char * astring; /* dummy */
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options = sfrt_default_options;
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if (!(meta = argv_get(argv,options,sfrt_argv_flags(flags))))
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return -1;
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dflags = 0;
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aflags = 0;
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nunits = 0;
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astring = 0; /* dummy */
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program = argv_program_name(argv[0]);
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if (!argv[1] && (flags & SFRT_DRIVER_VERBOSITY_USAGE))
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return sfrt_driver_usage(program,0,options,meta);
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/* get options, count units */
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for (entry=meta->entries; entry->fopt || entry->arg; entry++) {
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if (entry->fopt) {
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switch (entry->tag) {
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case TAG_HELP:
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if (flags & SFRT_DRIVER_VERBOSITY_USAGE)
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return sfrt_driver_usage(program,entry->arg,options,meta);
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case TAG_VERSION:
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dflags |= SFRT_DRIVER_VERSION;
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break;
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/* dummy */
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/* dummy */ case TAG_OUTPUT_DUMMY:
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/* dummy */ astring = entry->arg;
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/* dummy */ break;
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/* dummy */
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/* dummy */ case TAG_OUTPUT_PROPERTY:
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/* dummy */ if (!(strcmp(entry->arg,"name")))
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/* dummy */ aflags |= SFRT_OUTPUT_NAME;
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/* dummy */ else if (!(strcmp(entry->arg,"address")))
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/* dummy */ aflags |= SFRT_OUTPUT_ADDRESS;
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/* dummy */ break;
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}
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} else
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nunits++;
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}
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if (!(ctx = sfrt_driver_ctx_alloc(meta,nunits)))
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return sfrt_get_driver_ctx_fail(meta);
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ctx->ctx.program = program;
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ctx->cctx.drvflags = dflags;
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ctx->cctx.actflags = aflags;
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ctx->cctx.anystring = astring; /* dummy */
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ctx->ctx.cctx = &ctx->cctx;
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*pctx = &ctx->ctx;
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return SFRT_OK;
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}
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static void sfrt_free_driver_ctx_impl(struct sfrt_driver_ctx_alloc * ictx)
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{
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argv_free(ictx->meta);
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free(ictx);
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}
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void sfrt_free_driver_ctx(struct sfrt_driver_ctx * ctx)
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{
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struct sfrt_driver_ctx_alloc * ictx;
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uintptr_t addr;
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if (ctx) {
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addr = (uintptr_t)ctx - offsetof(struct sfrt_driver_ctx_alloc,ctx);
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addr = addr - offsetof(struct sfrt_driver_ctx_impl,ctx);
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ictx = (struct sfrt_driver_ctx_alloc *)addr;
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sfrt_free_driver_ctx_impl(ictx);
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}
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}
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